coy·o·til·lo 
(koi′ə-tĭlō, -tēyō, kī′ə-)
(koi′ə-tĭlō, -tēyō, kī′ə-)n. pl. coy·o·til·los
A poisonous shrub (Karwinskia humboldtiana) native to Texas and Mexico, having small greenish flowers and black fruits.
[American Spanish, diminutive of coyote, coyote; see COYOTE.]