Green’s Dictionary of Slang

kelly ned n.

[rhy. sl.; ult. the bushranger Ned Kelly (1855–80)]

(Aus./US) the head.

1944		Maurer & Baker ‘“Aus.” Rhyming Argot’ in AS XIX:3.
1960		J. Franklyn Dict. of Rhy. Sl.
2002		Pete’s Aussie Sl. Home Page 🌐 Kelly Ned: the head.