noun🔗ShareA fin at the tail of a fish, caudal fin"The goldfish used its tailfins to steer through the water in its bowl. "fishanimalpartanatomybiologyChat with AIVocabulary GamePractice Reading
noun🔗ShareA fin on the tail of an aircraft, vertical stabilizer"The airplane's tailfins helped it stay stable during the bumpy landing. "vehicleparttechnologyChat with AIVocabulary GamePractice Reading
noun🔗ShareA fin-like projection at the rear of a car, common on American cars of the 1950s."My grandfather's old Cadillac, with its massive chrome tailfins, always turned heads. "vehiclestylepartChat with AIVocabulary GamePractice Reading
