Definition of Gaff

Noun: gaff gaf

A sharp metal spike or spur that is fastened to the leg of a gamecock
A spar rising aft from a mast to support the head of a quadrilateral fore-and-aft sail
An iron hook with a handle; used for landing large fish
[Brit] (informal) someone's building (house, shop, etc)
"where the prince hangs out when he is at his father's gaff at Highgrove"