| Verb | 1. | fold up - bend or lay so that one part covers the other; "fold up the newspaper"; "turn up your collar"corrugate - fold into ridges; "corrugate iron" pleat, ruffle - pleat or gather into a ruffle; "ruffle the curtain fabric" tuck - make a tuck or several folds in; "tuck the fabric"; "tuck in the sheet" crimp, pinch - make ridges into by pinching together cross - fold so as to resemble a cross; "she crossed her legs" collapse - fold or close up; "fold up your umbrella"; "collapse the music stand" | |