WordNet (r) 3.0 (2006):

coachwhip
    n 1: desert shrub of southwestern United States and Mexico
         having slender naked spiny branches that after the rainy
         season put forth foliage and clusters of red flowers [syn:
         ocotillo, coachwhip, Jacob's staff, vine cactus,
         Fouquieria splendens]
    2: a whipsnake of southern United States and Mexico; tail
       resembles a braided whip [syn: coachwhip, coachwhip
       snake, Masticophis flagellum]