KEELBACK Meaning of KEELBACK in English ˈ ̷ ̷ˌ ̷ ̷ nounalso keelback snakeEtymology: keel (III) + back : a small aquatic Indian snake ( Natrix piscator ) with strongly keeled dorsal scales Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012