noun A part of a larger whole, usually in such a form that it is able to be separated from other parts.
I’d like another piece of pie.
noun A single item belonging to a class of similar items.
a piece of machinery
noun One of the figures used in playing chess, specifically a higher-value figure as distinguished from a pawn; those with which draughts, backgammon, and other similar board games are played.
noun A coin, especially one valued at less than the principal unit of currency.
a sixpenny piece
noun An artistic creation, such as a painting, sculpture, musical composition, literary work, etc.
period piece
noun An article published in the press.
Today's paper has an interesting piece on medical research.