Green’s Dictionary of Slang

damn all adj.

[damn-all n.]

none, no.

[UK]Britannia & Eve (UK) 1 Nov. 28/1: Stinker had come in for three exquisitely bound Chaucers that meant dam-all to him.
[Ire](con. 1940s) B. Behan Borstal Boy 173: I see damn-all screw.