Origin: < ModL tiglium, croton-oil plant < Gr tilos, thin feces (the seeds have a cathartic effect) < IE *ti-, var. of base *ta-, to melt > thaw
See tiglic acid in American Heritage Dictionary 4
Origin: From New Latin (Croton) tiglium, croton species name
Origin: , perhaps from Greek tīlos, diarrhea (from the use of croton oil as a purgative).