Meaning: Completely naked; without any clothing.

Part of speech: adjective

Example: He was buck naked when he jumped into the pool.

Category: Colloquialism

Synonyms:

• naked
• bare

Meaning: A term used in Australian English to indicate something is impossible.

Part of speech: noun

Example: You've got Buckleys of winning that game.

Category: Colloquialism

Synonyms:

• impossible
• no chance