Green’s Dictionary of Slang

galtee v.

[ety. unknown]

(UK tramp) to spend.

[UK]W. Newton Secrets of Tramp Life Revealed 17: He has a nice bit of ready money, then like the rest of the moochers he must go to the ‘Suck Crib,’ or beerhouse and ‘galtees,’ or spends all he has got.