nounπShareOne of the appendages of a fish, used to propel itself and to manoeuvre/maneuver."The goldfish used its fins to swim around the bowl. "animalpartfishbiologyanatomyChat with AIVocabulary GamePractice Reading
nounπShareA similar appendage of a cetacean or other marine animal."The dolphin propelled itself through the water using its powerful fins. "animalpartbiologyoceanfishanatomyChat with AIVocabulary GamePractice Reading
nounπShareA thin, rigid component of an aircraft, extending from the fuselage and used to stabilise and steer the aircraft."The fin stabilises the plane in flight."vehicleparttechnicalChat with AIVocabulary GamePractice Reading
nounπShareA similar structure on the tail of a bomb, used to help keep it on course."The bomb dropped from the plane, its fins guiding it straight towards the target. "militaryweaponparttechnicalChat with AIVocabulary GamePractice Reading
nounπShareA hairstyle, resembling the fin of a fish, in which the hair is combed and set into a vertical ridge along the top of the head from about the crown to the forehead."At the 1950s-themed dance, her fins, sculpted with hairspray and a comb, made her look like a glamorous movie star. "appearancestylebodyChat with AIVocabulary GamePractice Reading
nounπShareA device worn by divers and swimmers on their feet."The divers wore fins to swim faster."sportnauticalweardeviceChat with AIVocabulary GamePractice Reading
nounπShareAn extending part on a surface of a radiator, engine, heatsink, etc., used to facilitate cooling."The motorcycle engine has fins to help dissipate heat and prevent overheating. "partmachinetechnicaltechnologydeviceenergyelectronicsphysicsChat with AIVocabulary GamePractice Reading
nounπShareA sharp raised edge (generally in concrete) capable of damaging a roof membrane or vapor retarder."The workers carefully removed the concrete fins that could tear the new roof membrane. "architecturematerialbuildingChat with AIVocabulary GamePractice Reading
verbπShareTo cut the fins from a fish, shark, etc."The fishermen fin sharks for their fins, leaving the rest of the body to waste. "fishanimalactionChat with AIVocabulary GamePractice Reading
verbπShare(Of a fish) to swim with the dorsal fin above the surface of the water."The fish fins above the water's surface as it swam swiftly. "fishactionbiologyanimalChat with AIVocabulary GamePractice Reading
verbπShareTo swim in the manner of a fish."A neutrally buoyant diver does not need to fin to maintain depth."fishactionanimalChat with AIVocabulary GamePractice Reading
verbπShareTo provide (a motor vehicle etc) with fins."The custom shop will fin the car next week, adding those classic tail fins. "vehiclestyleChat with AIVocabulary GamePractice Reading
nounπShare(formerly Australia) a five-pound (Β£5) note; the sum of five pounds.""Dad lent me five fins to buy that old bicycle at the garage sale." "valuefinancenumbereconomyChat with AIVocabulary GamePractice Reading
nounπShareA five-dollar bill; the sum of five dollars."I only had two fins in my wallet, so I couldn't buy lunch. "valuefinanceeconomyChat with AIVocabulary GamePractice Reading