n 1 : a small cactus of the genus Lophophora (L. williamsii) with rounded stems covered with jointed tubercles that are used as a stimulant and antispasmodic esp. among the Mexican Indians 2 a : a usu. colorless Mexican liquor distilled esp. from the central leaves of any of various fleshy-leaved agaves b : a plant from which mescal is produced .
Similar sounding terms: me·so·coele mus·cle
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