From Longman Dictionary of Contemporary Englishgym shoeˈgym shoe noun [countable] DCCDSa light shoe with a cloth top and a flat rubber bottom that children wear for games and sport at school SYN plimsoll British English
Examples from the Corpus
gym shoe• The stolen gym shoe, hurled by Snecky, caught him on the side of the face.• He was back: but, the gym shoe signalled, on his own terms. 