8 letters · 17 points in Scrabble
noun primitive fish of the Mississippi valley having a long paddle-shaped snout
noun small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
adjective having a beak resembling that of a duck
originFrom duck + bill.
Etymology from Wiktionary, CC BY-SA 3.0