Plait \Plait\, v. t. [imp. & p. p. Plaited; p. pr. & vb. n. Plaiting.]

1. To fold; to double in narrow folds; to pleat; as, to plait a ruffle.

2. To interweave the strands or locks of; to braid; to plat; as, to plait hair; to plait rope.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Plait \Plait\, n. [OE. playte, OF. pleit, L. plicatum, plicitum, p. p. of plicare to fold, akin to plectere to plait. See Ply, and cf. Plat to weave, Pleat, Plight fold.]

1. A flat fold; a doubling, as of cloth; a pleat; as, a box plait.

The plaits and foldings of the drapery. --Addison.

2. A braid, as of hair or straw; a plat.

Polish plait. (Med.) Same as Plica.

Source: Webster's Revised Unabridged Dictionary (1913)