nounπShareOne of the appendages of a fish, used to propel itself and to manoeuvre/maneuver."The fish used its fins to swim quickly towards the surface. "animalfishbodypartorganismbiologynauticalChat with AIVocabulary GamePractice Reading
nounπShareA similar appendage of a cetacean or other marine animal."The dolphin's fin sliced through the water, a powerful movement. "animalbodypartbiologyanatomyoceanfishChat 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."technicalvehiclepartmachineChat with AIVocabulary GamePractice Reading
nounπShareA similar structure on the tail of a bomb, used to help keep it on course."The pilot carefully checked the bomb's fin to ensure it was securely attached before dropping it. "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."My sister wore a striking fin hairstyle to the school dance. "appearancestyleChat with AIVocabulary GamePractice Reading
nounπShareA device worn by divers and swimmers on their feet."The divers wore fins to swim faster."sportnauticalweardeviceoceanChat with AIVocabulary GamePractice Reading
nounπShareAn extending part on a surface of a radiator, engine, heatsink, etc., used to facilitate cooling."The radiator's fins helped cool the engine quickly. "partmachinetechnicaltechnologyenergyChat with AIVocabulary GamePractice Reading
nounπShareA sharp raised edge (generally in concrete) capable of damaging a roof membrane or vapor retarder."The roofer carefully avoided the concrete fin, as it could easily tear the new waterproof membrane. "buildingarchitecturetechnicalmaterialChat with AIVocabulary GamePractice Reading
verbπShareTo cut the fins from a fish, shark, etc."Before cooking the fish, I had to fin it to remove the sharp spines. "fishactionChat with AIVocabulary GamePractice Reading
verbπShare(Of a fish) to swim with the dorsal fin above the surface of the water."The fish finned gracefully, its dorsal fin just breaking the surface of the pond. "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."fishanimalactionChat with AIVocabulary GamePractice Reading
verbπShareTo provide (a motor vehicle etc) with fins."The mechanic finned the old car to make it faster. "vehicletechnologyChat with AIVocabulary GamePractice Reading
nounπShare(formerly Australia) a five-pound (Β£5) note; the sum of five pounds."My grandfather used to pay for his newspaper with a fin. "financeeconomyChat with AIVocabulary GamePractice Reading
nounπShareA five-dollar bill; the sum of five dollars."My grandmother gave me a fin for my birthday, so I can buy a new book. "financebusinesseconomyvalueamountChat with AIVocabulary GamePractice Reading