Definition of cossie in English:

cossie

Line breaks: cos¦sie
Pronunciation: /ˈkɒzi
 
, -s-/
(also cozzie)

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.

Origin

early 20th century: alteration of the first element of costume.

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