Green’s Dictionary of Slang

kif n.

also kaif, kef, keef, kief, kiff
[Arabic kaif, the state of bliss reached after smoking hashish]

(drugs) a variety of hashish produced in Morocco; also attrib.

[[UK]Confessions of an Eng. Hachish-Eater 17: The ‘Keef’ state, the state of blissful happiness and contentment].
[UK]E. Pugh City Of The World 322: Within these walls [...] you will find a number of silent men sitting in the semi-darkness, enjoying their kaif, which is Eastern for dolce far niente. They loll and sprawl [...] some chewing betel or bhang or hashish, others supine and blissfully unconscious in the throes of an opium dream.
[US]T. Williams Camino Real Block Seven: jacques: Did she smoke at Ahmed’s? abdullah: Two kif pipes.
[UK]T. Keyes All Night Stand 122: Put down some kif there. This’ll be the mammy and daddy of all joints.
[US]I. Rosenthal Sheeper 212: Plenty of kief and no water.
[UK]‘Hassan-i-Sabbah’ Leaves of Grass 1: Kif / Mahjoun / Keef.
[UK]S. McConville ‘Prison Language’ in Michaels & Ricks (1980) 525: Cannabis is also known to prisoners by the names given to it in the different places in which it is cultivated: [...] ganga (West Indies), and kief (North Africa).
[US]L. Heinemann Paco’s Story (1987) 37: New Orleans fags in Mardi Gras drag [...] stoned out of their fucking skulls on bennies and kef.
[UK]Indep. Rev. 21 July 1: Smoking kif with headshrinkers.
[US]ONDCP Street Terms 13: Kiff — Marijuana cigarette.
[SA]IOL News (Western Cape) 14 Aug. [Internet] The cultivation of kif or hashish plants has been reduced.