<p><strong>noun</strong></p><ul><li>the flat cutting part of a sword, knife, etc.</li><li>a sword, rapier, or the like.</li><li>a part of a tool or mechanism which is thin and flat with a tapered edge, used for clearing, wiping, scraping, etc.: the blade of a windshield wiper; the blade of a bulldozer.</li><li>the arm of a propeller or other similar rotary mechanism, as an electric fan or turbine.</li><li>Botany: the leaf of a plant, especially of a grass or cereal.</li><li>the broad part of a leaf, as distinguished from the stalk or petiole.</li><li>the metal part of an ice skate that comes into contact with the ice.</li><li>a thin, flat part of something, as of an oar or a bone: shoulder blade.</li><li>a prosthetic lower leg, primarily for athletes, ending in a curved strip of flexible carbon fiber that acts as an ankle and foot, allowing running and jumping.</li><li>Phonetics: the foremost and most readily flexible portion of the tongue, including the tip and implying the upper and lower surfaces and edges.</li><li>the upper surface of the tongue directly behind the tip, lying beneath the alveolar ridge when the tongue is in a resting position.</li><li>the elongated hind part of a fowl's single comb.</li><li>a swordsman.</li><li>Archaic: a dashing, swaggering, or jaunty young man: a gay blade from the nearby city.</li></ul><p><strong>verb</strong></p><ul><li>to divide into compartments.</li></ul>