noun (plural cossies)• informal
- A swimming costume or a pair of swimming trunks.More example sentences
- Now of course when it comes to pulling on our togs, cozzies, bathers or trunks and swimming competitively, Australians never seem to be too far from the medals.
- I could see beachgoers in their swimming cossies.
- On Tuesday, she shopped for a swimming cossie at the store.
early 20th century: alteration of the first element of costume.