Cossie
noun, slang ·Moderate ·College level
Definitions
- 1 A swimming costume. Australia, UK
"“Let's not bother with cossies Jack. Let′s pretend it′s years ago.” She remembered the times they had swum at Eleni beach totally naked, the moon and stars lighting the little waves as they rolled slowly to shore."
- 2 A Ford automobile powered by a Cosworth engine, especially the Ford Sierra RS Cosworth or the Ford Escort RS Cosworth. informal
"The 525bhp rear-drive stunner may not be the most powerful Cossie we've ever featured, nor, with its dose-to-standard looks, is it the most outrageous feature car to grace these pages. But what it is, is damn-near perfect!"
Example
More examples"“Let's not bother with cossies Jack. Let′s pretend it′s years ago.” She remembered the times they had swum at Eleni beach totally naked, the moon and stars lighting the little waves as they rolled slowly to shore."
Etymology
From costume + -ie (“diminutive suffix”).
From Cos(worth) + -ie.
Related phrases
More for "cossie"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.