How do you spell Plait

Available Definitions:
1)  n. - A flat fold; a doubling, as of cloth; a pleat; as, a box plait.
2)  n. - A braid, as of hair or straw; a plat.
3)  v. t. - To fold; to double in narrow folds; to pleat; as, to plait a ruffle.
4)  v. t. - To interweave the strands or locks of; to braid; to plat; as, to plait hair; to plait rope.