8 letters · 10 points in Scrabble
noun birds having keeled breastbones for attachment of flight muscles
adjective having a ridge or shaped like a ridge or suggesting the keel of a ship
originBorrowed from Latin carīnātus, from carīna (“keel”) + -ātus, see -ate (adjective-forming suffix). The noun comes from a substantivization of the adjective, see -ate (noun-forming suffix).
Etymology from Wiktionary, CC BY-SA 3.0