warfarin
Concise Oxford English Dictionary © 2008 Oxford University Press:
warfarin /ˈwɔːfərɪn/
▶noun a water-soluble compound with anticoagulant properties, used as a rat poison and in the treatment of thrombosis.
– origin 1950s: from the initial letters of Wisconsin Alumni Research Foundation + -arin on the pattern of coumarin.
'warfarin' also found in these Oxford entries:

