noun

1. A padded or knit covering put on an item to keep it warm, especially a teapot or egg.

2. A padded or knit covering for any item (often an electronic device such as a laptop computer).

3. A work of crime fiction in which sex and violence are downplayed or treated humorously, and the crime and detection take place in a small, socially intimate community.

verb

1. To become snug and comfortable.

2. To become friendly with.

   “He spent all day cosying up to the new boss, hoping for a plum assignment.”

adjective

1. Affording comfort and warmth; snug; social

Synonyms: snug