ˈknackers’ yard BrE AmE ( also knacker’s ) noun [countable] British English
[ Date: 1800-1900 ; Origin: knacker 'horse-killer' (19-20 centuries) from knacker 'saddle-maker' , perhaps from a Scandinavian language ]
1 . a place where horses are killed
2 . ready/fit for the knacker’s yard too old to be useful or to work properly