[{"Bold_text": "noun", "List Items": ["a small metal instrument specially cut to fit into a lock and move its bolt.", "any of various devices resembling or functioning as a key:the key of a clock.", "key card key card.", "something that affords a means of access:the key to happiness.", "something that secures or controls entrance to a place:Gibraltar is the key to the Mediterranean.", "something that affords a means of clarifying a problem.Synonyms: pivotal , major , chief , clue , resolution , explanation , answer", "a book, pamphlet, or other text containing the solutions or translations of material given elsewhere, as testing exercises.", "a systematic explanation of abbreviations, symbols, etc., used in a dictionary, map, etc.:Compare legend(def4) legend(def4).pronunciation key.", "the system, method, pattern, etc., used to decode or decipher a cryptogram, as a code book, machine setting, or keyword.", "one of a set of marked parts, designated areas, or levers pressed in operating a typewriter, computer terminal, calculator, etc.", "a manually operated lever for opening and closing an electric circuit, used to produce signals in telegraphy.", "Music.(in a keyboard instrument) one of the levers that when depressed by the performer sets in motion the playing mechanism.(on a woodwind instrument) a metal lever that opens and closes a vent.the relationship perceived between all tones in a given unit of music and a single tone or a keynote ; tonality .the principal tonality of a composition:a symphony in the key of C minor.the keynote or tonic of a scale.", "(in a keyboard instrument) one of the levers that when depressed by the performer sets in motion the playing mechanism.", "(on a woodwind instrument) a metal lever that opens and closes a vent.", "the relationship perceived between all tones in a given unit of music and a single tone or a keynote ; tonality .", "the principal tonality of a composition:a symphony in the key of C minor.", "the keynote or tonic of a scale.", "tone or pitch, as of voice:to speak in a high key.", "mood or characteristic style, as of expression or thought:He writes in a melancholy key.", "degree of intensity, as of feeling or action.", "a pin, bolt, wedge, or other piece inserted in a hole or space to lock or hold parts of a mechanism or structure together; a cotter.", "a small piece of steel fitting into matching slots of a hub of a wheel or the like and the shaft on which the wheel is mounted so that torque is transmitted from one to the other.", "a contrivance for grasping and turning a bolt, nut, etc.", "Computers.a field or group of characters within a record that identifies the record, establishing its position among sorted records, and/or provides information about its contents.", "(in a series of advertisements or announcements soliciting replies) a unique code inserted for each medium used, to determine the relative effectiveness of the media.", "Electricity.a device for opening and closing electrical contacts.a hand-operated switching device ordinarily formed of concealed spring contacts with an exposed handle or push button, capable of switching one or more parts of a circuit.", "a device for opening and closing electrical contacts.", "a hand-operated switching device ordinarily formed of concealed spring contacts with an exposed handle or push button, capable of switching one or more parts of a circuit.", "Biology.a systematic tabular classification of the significant characteristics of the members of a group of organisms to facilitate identification and comparison.", "Masonry.a keystone.", "Architecture.(in a ribbed vault) a stone, as a boss, at the intersection of two or more ribs.", "Masonry, Carpentry.a wedge, as for tightening a joint or splitting a stone or timber.", "Carpentry.a small piece of wood set into a timber across the grain to prevent warping.", "Building Trades.any grooving or roughness applied to a surface to improve its bond with another surface.", "Basketball. keyhole(def2) keyhole(def2).", "Photography.the dominant tonal value of a picture, a high-key picture having light tonal values and minimal contrast and a low-key picture being generally dark with minimal contrast.", "Painting.the tonal value and intensity of a color or range of colors:Rembrandt's colors are characterized by their low key.", "Botany.a samara.", "Key,a member of the House of Keys.", "keys,spiritual authority."]}, {"Bold_text": "adjective", "List Items": ["essential ; central ; important :a key person in the company;key industries."]}, {"Bold_text": "verb (used with object)", "List Items": ["to regulate or adjust (actions, thoughts, speech, etc.) to a particular state or activity; bring into conformity:to key one's to the intellectual level of the audience.", "Music.to regulate the key or pitch of.", "Painting.to paint (a picture) in a given key.to adjust the colors in (a painting) to a particular hue:He keyed the painting to brown.", "to paint (a picture) in a given key.", "to adjust the colors in (a painting) to a particular hue:He keyed the painting to brown.", "to fasten, secure, or adjust with a key, wedge, or the like, as parts of a mechanism.", "to provide with a key.", "(in the layout of newspapers, magazines, etc.) to identify, through signs or symbols, the positions of illustrations or pieces of copy in a dummy.", "to lock with or as if with a key.", "Masonry.to provide (an arch or vault) with a keystone.", "Computers. keyboard(def4) keyboard(def4)."]}, {"Bold_text": "verb (used without object)", "List Items": ["to use a key.", "Computers. keyboard(def4) keyboard(def4)."]}, {"Bold_text": "verb phrase", "List Items": ["Football.to watch the position and movements of an opponent in order to anticipate a play:The defensive backs keyed on the star receiver.Alsokey in on.to single out as of prime importance or interest; be intent on or obsessed with:a company that is keyed in on growth.", "Football.to watch the position and movements of an opponent in order to anticipate a play:The defensive backs keyed on the star receiver.", "Alsokey in on.to single out as of prime importance or interest; be intent on or obsessed with:a company that is keyed in on growth.", "Computers. keyboard(def4) keyboard(def4).", "to bring to a particular degree of intensity of feeling, excitement, energy, nervousness, agitation, etc.:keyed up over the impending test.to raise (a piece of masonry) by the insertion of a wedge or wedges.to raise (the haunches of an arch) by the insertion of a voussoir.", "to bring to a particular degree of intensity of feeling, excitement, energy, nervousness, agitation, etc.:keyed up over the impending test.", "to raise (a piece of masonry) by the insertion of a wedge or wedges.", "to raise (the haunches of an arch) by the insertion of a voussoir."]}, {"Bold_text": "noun", "List Items": ["a reef or low island; cay ."]}, {"Bold_text": "noun", "List Items": ["a kilogram of marijuana or other narcotic drug."]}, {"Bold_text": "noun", "List Items": ["Francis Scott,1780–1843,U.S. lawyer: author of The Star-Spangled Banner."]}]