- a fold of definite, even width made by doubling cloth or the like upon itself and pressing or stitching it in place.
- to fold or arrange in pleats.
Origin of pleat
- an attachment on a sewing machine that makes pleats
- (tr) to arrange (material, part of a garment, etc) in pleats
Word Origin and History for pleater
1560s, used as the verb version of plait (n.) and probably representing an alternative pronunciation. Related: Pleated; pleating.
"a fold," 1580s, variant of plait (n.). With a gap in the printed record 17c.-18c., but probably it was in continuous oral use.