Wordnet 3.0
NOUN (1)
1. 
 an anticoagulant (trade name Coumadin) use to prevent and treat a thrombus or embolus; 
[syn: warfarin, Coumadin]
WordNet (r) 3.0 (2006):
warfarin
    n 1: an anticoagulant (trade name Coumadin) use to prevent and
         treat a thrombus or embolus [syn: warfarin, Coumadin]