PHRASAL VERB-ERG (衣服)起皱，起褶 If cloth or someone's clothing rucks up, it forms folds so that it covers a smaller area than it did before. (衣服)起皱，起褶 [Also VERB n PREPOSITION]
His designer suits ruck up round his middle. [VERBPREP.]
他的名牌套装在腰部起了褶皱。
His shoe had rucked up one corner of the pale rug. [VERBPREP. noun (not pronoun)]