Green’s Dictionary of Slang

(a) to inhale cocaine; thus sleigh-rider n., one who inhales cocaine; sleigh-riding n., inhaling cocaine.

1913		Sat. Eve. Post 15 Feb. in DN IV:ii 127: ‘Coke sniffer,’ explained Tom. ‘They call cocaine crystals snow and a coke user is a sleigh rider.’.
1919		C.S. Montanye ‘White as Snow’ Detective Story 18 Feb. 🌐 Mike the Mouse picked up his acquaintance in a Rialto cafe and promptly learned [...] that the man was a ‘sleigh rider’.
1927		C. Sandburg ‘Cocaine Lil’ in Amer. Songbag 206: She wore a snowbird hat and sleigh-riding clothes.
1929		E. Caldwell Bastard (1963) 35: ‘Be careful,’ Rose whispered [...] ‘she’s sleigh-riding.’.
1931–4		D. Clemmer Prison Community (1940) 335/2: sleigh rider, n. A user of ‘snow,’ i.e., cocaine.
1959		J.E. Schmidt Narcotics Lingo and Lore.
1971		E.E. Landy Underground Dict. (1972).

(b) to take morphine (which is also white).

1949

N. Algren Man with the Golden Arm 326: I’d be back sleigh-ridin’ in two days without you.

(c) to give someone cocaine.

1965

‘Cocaine Nell’ B. Jackson Get Your Ass in the Water (1974) 124: I’m gonna sleigh-ride you.