Green’s Dictionary of Slang

boned adj.

1. tipsy [the image of a boned carcass, reduced to flabby, floppy meat].

[UK]Partridge DSUE (8th edn) 114/1: from ca. 1937.

2. hit hard on the head [the bone is that of the battered skull].

[UK]D. Powis Signs of Crime 174: Boned Hit on the head hard.