Green’s Dictionary of Slang

grocery n.²

a liquor store or small bar; a speakeasy.

1847		W.T. Porter Quarter Race in Kentucky and Other Sketches 104: He went into his favourite grocery.
1851		‘Losing Game of Poker’ in T.A. Burke Polly Peablossom’s Wedding 46: Bennett and Smith were both at the grocery, the latter about two-thirds snapped.
1856		Iroquois Republican 25 Dec. 2/3: A ‘grocery’ — a ‘doggery’ — a ‘hole-in-the-wall’ — is an ‘odious damned spot’ in any community [DA].
1944		Duncan & Nickols Mentor Graham 105: John Clary opened what he called a ‘grocery’ (some termed it ‘doggery’) [DA].

SE in slang uses

In compounds

grocery-boy (n.) [he is a constant visitor to his local grocery]

(US drugs) an addict, in the throes of withdrawal, whose appetite has returned.

1938		D. Maurer ‘Lang. of the Und. Narcotic Addict’ Pt 2 in Lang. Und. (1981) 103/2: grocery-boy. 1. An addict who has drugs but is hungry and wants food. 2. An addict who has developed a large appetite as an aftermath of his withdrawal symptoms.
1959		J.E. Schmidt Narcotics Lingo and Lore.

In phrases