Webster's English Dictionary

Enter the word to look up:

buckthorn

buck.thorn \'b*k-.tho.(*)rn\ n 1: any of a genus (Rhamnus of the family 
   Rhamnaceae, the buckthorn fa mily) of often thorny trees or shrubs some of 
   which yield purgatives or pigments 2: a tree (Bumelia lycioides of the 
   sapodilla family) of the southern  U.S