hashish

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Resin prepared from the flowering tops of the female cannabis plant and smoked, chewed, or ingested to induce euphoria.

from The Century Dictionary.

• noun The tops and tender parts of Indian hemp (Cannabis sativa, var. Indica), called in India, ganjah (which see), together with a resinous exudation upon them, gathered after flowering. See hemp, and Indian hemp (under hemp).
• noun An intoxicating preparation of this plant, which is either smoked or drunk as an infusion: called in India bhang (which see).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The leaves and tender parts of the Indian hemp plant (which are intoxicating), which are dried for either chewing or smoking.
• noun A cannabis extract (See Hashish on Wikipedia.Wikipedia).
• noun slang marijuana generally.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun purified resinous extract of the hemp plant; used as a hallucinogen