"reddish pigment found in bile," 1868, from German bilirubin (1864), from bili- "bile" (see bile) + Latin ruber "red" (from PIE root *reudh- "red, ruddy") + -ine (2).
biliary
bilinear
bilingual
bilingualism
bilious
bilirubin
bilk
bill
billable
billabong
billboard
