"pleat" in the noun sense
1. pleat, plait
any of various types of fold formed by doubling fabric back upon itself and then pressing or stitching into shape
"pleat" in the verb sense
1. ruffle, pleat
pleat or gather into a ruffle
"ruffle the curtain fabric"
2. pleat, plicate
fold into pleats
"Pleat the cloth"
Source: WordNet® (An amazing lexical database of English)
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