Source : Webster's Revised Unabridged Dictionary (1913)

Cleavers \Cleav"ers\, n. [From {Cleave} to stick.] (Bot.)
   A species of {Galium} ({G. Aparine}), having a fruit set with
   hooked bristles, which adhere to whatever they come in
   contact with; -- called also, {goose grass}, {catchweed},
   etc.

Source : WordNet®

cleavers
     n : annual having the stem beset with curved prickles; North
         America and Europe and Asia [syn: {clivers}, {goose grass},
          {catchweed}, {spring cleavers}, {Galium aparine}]