<p><strong>Adjective:</strong></p><ul><li>Being, relating to, or located on or nearest to the side where a person’s heart normally is (right): Dan was ahead of me and on the left side of the street. I have arthritis in my left knee. Often Left.</li><li>Of or belonging to the political Left; having liberal or radical views in politics.</li><li>Mathematics. Pertaining to an element of a set that has a given property when written on the left of an element or set of elements of the set: a left identity, as 1 in 1 ⋅ x = x.</li></ul><p><strong>Noun:</strong></p><ul><li>The left side or something that is on the left side; the direction toward that side: The laundry room is the first door on your left. Move the picture about a foot to the left so it’s centered above the sofa.</li><li>A turn toward the left: Make a left at the next corner.</li><li>The Left: The complex of individuals or organized groups advocating liberal reform or revolutionary change in the social, political, or economic order.</li><li>The position held by these people.</li><li>Left wing.</li><li>Government. The part of a legislative assembly, especially in continental Europe, that is situated on the left side of the presiding officer and that is customarily assigned to members of the legislature who hold more radical and socialistic views than the rest of the members.</li><li>The members of such an assembly who sit on the left.</li><li>Boxing. A blow delivered by the left hand.</li><li>Baseball. Left field.</li></ul><p><strong>Adverb:</strong></p><ul><li>Toward the left: She moved left on entering the room.</li></ul>