- To become folded, plaited, or doubled; to close over another of the same kind; to double together; as, the leaves of the door fold.
- A doubling,esp. of any flexible substance; a part laid over on another part; a plait; a plication.
- Times or repetitions; -- used with numerals, chiefly in composition, to denote multiplication or increase in a geometrical ratio, the doubling, tripling, etc., of anything; as, fourfold, four times, increased in a quadruple ratio, multiplied by four.
- That which is folded together, or which infolds or envelops; embrace.