cockspur
  雞距
  Cock·spur n. Bot. A variety of Cratægus, or hawthorn (Cratægus Crus-galli), having long, straight thorns; -- called also Cockspur thorn.
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  cockspur
       n 1: widely grown stout Old World hay and pasture grass [syn: orchard
            grass, cocksfoot, Dactylis glomerata]
       2: small spiny West Indian tree [syn: Pisonia aculeata]