a stick with a hook (= a curved piece of metal) on the end used to pull large fish out of the water （将大鱼拉出水的）挽钩，手钩 - (British English, slang)
the house, flat, etc. where somebody lives 住所；安乐窝
Word Originsense 1 Middle English: from Provençal gaf ‘hook’; related to gaffe. sense 2 1930s: of unknown origin.
Idioms
blow the gaff (on somebody/something)
- (British English, informal)
to tell something secret, especially by mistake （尤指因大意）泄露秘密