Dictionary definition · cosy
noun
- a padded cloth covering to keep a teapot warm
adjective
- enjoying or affording comforting warmth and shelter especially in a small space"a cozy nook near the fire"
- suggesting connivance"a cozy arrangement with the police"
- having or fostering a warm or friendly and informal atmosphere"had a cozy chat"
Source: Open English WordNet (CC BY 4.0).