noun a braid, as of hair or straw; a plat.
2. plait ·noun a flat fold; a doubling, as of cloth; a pleat; as, a box plait.
3. plait ·vt to fold; to double in narrow folds; to pleat; as, to plait a ruffle.
4. plait ·vt to interweave the strands or locks of; to braid; to plat; as, to plait hair; to plait rope.