Nouns

(n)fold, crease, plication, flexure, crimp, bendan angular or rounded shape made by folding“a fold in the napkin”, “a crease in his trousers”, “a plication on her blouse”, “a flexure of the colon”, “a bend of his elbow”
(n)congregation, fold, faithfula group of people who adhere to a common faith and habitually attend a given church
(n)fold, foldinga geological process that causes a bend in a stratum of rock
(n)flock, folda group of sheep or goats
(n)fold, plicaa folded part (as in skin or muscle)
(n)fold, foldingthe act of folding“he gave the napkins a double fold”

Verbs

(v)fold, fold up, turn upbend or lay so that one part covers the other“fold up the newspaper”, “turn up your collar”
(v)foldincorporate a food ingredient into a mixture by repeatedly turning it over without stirring or beating“Fold the egg whites into the batter”
(v)close up, close, fold, shut down, close downcease to operate or cause to cease operating“The owners decided to move and to close the factory”, “My business closes every night at 8 P.M.”, “close up the shop”
(v)pen up, foldconfine in a fold, like sheep
(v)fold, fold upbecome folded or folded up“The bed folds in a jiffy”