Green’s Dictionary of Slang

1. a hand.

1938		E.R. Coulson ‘Aeroplane Factory English’ AS XIII:2 156/1: Glom, a hand.
1944		P. Kendall Dict. Service Sl. n.p.: gloms . . . hands.

2. (also glaum) a look.

1937		J. Dane Cabana Murders 240: While you’re there, I’ll have a glom at the bedroom.
1944		D. Runyon Runyon à la Carte 27: Well, then I get a good glaum at the gee.

3. (US, also glam, glaum) a grab, a snatch, an act of stealing.

1950		S. Murphy Stone Mad (1966) 136: When her back was turned he put out his hand an’ made a glaum at a piece.
1983		W.F. Marshall ‘The Runaway’ in Livin’ in Drumlister 77: The oul’ da limpin’ out wi’ the pitchfork, / An’ the frens makin’ glam for the girl.