1. An orange-yellow pigment in the bile that forms as a product of haemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice
   - bilirubin, hematoidin [N. Amer]

Type of: animal pigment

• underbred
• underbrush
• undercarriage
• undercharge
• underclass
• underclassman
• underclothed
• underclothes
• underclothing
• undercoat
• undercoated
• undercook
• undercover
• undercover agent
• undercover operation
• undercover work
• undercroft
• undercurrent
• undercut
• underdacks
• underdaks
• underdevelop
• underdeveloped
• underdevelopment
• underdo