3.Boxing slang. to scuttle (a person's) nob: to break (his) head.
ΘΚΠ
the world > movement > impact > striking > striking on specific part of the body > strike on specific part of the body [verb (intransitive)] > on the head
nob1812
to scuttle (a person's) nob1834
1834 F. MahonyRel. Father Prout in Fraser's Mag. Dec. 671/1 I'll..scuttle your nob with my fist.
1842 R. H. BarhamDead Drummer in Ingoldsby Legends 2nd Ser. 206 What!..desart..and then rob! And go scuttling a poor little Drummer-boy's nob.