rare, v. — Green’s Dictionary of Slang

rare v.

[the injected drug must first be ‘cooked’]

to inhale narcotics.

1949		Monteleone Criminal Sl. (rev. edn).
1952		Lannoy & Masterson ‘Teen-age Hophead Jargon’ AS XXVII:1 29: RARE, adv. Taking cocaine or heroin by inhaling.
1971		E.E. Landy Underground Dict. (1972).
1979		J. Homer Jargon.