fin
- 01 A2 Elementary
n.a thin, flat part that sticks out from the body of a fish to help it swim and balance.
n.an organ of a fish or cetacean used for propulsion, steering, or balancing in water.
Simple“The shark's dorsal fin appeared above the water as it swam near the boat.”
In context“Marine biologists can often identify individual whales by the unique notches and scars found on their dorsal fins.”
- 02 B1 Intermediate
n.a long, flat rubber shoe that you wear to swim faster underwater.
n.a flipper-like device worn on the feet to increase propulsion while swimming or diving.
Simple“You should wear fins and a mask if you want to go snorkeling.”
In context“The diver kicked his fins powerfully to reach the coral reef before the current shifted.”
Synonyms - 03 B2 Upper Intermediate
n.a flat part on a plane, rocket, or machine that helps it stay steady or cool down.
n.a fixed or adjustable vane used for aerodynamic stability or to increase the surface area for heat dissipation.
Simple“The small fins on the back of the rocket help it fly straight.”
In context“The engine's cooling fins were clogged with dust, causing the internal temperature to rise dangerously during the long flight.”
Synonyms - 04 C1 Advanced
n.a slang word for a five-pound note or five dollars.
n.a slang term for a five-unit currency note, specifically five pounds in the UK or five dollars in the US.
Simple“He handed the shopkeeper a fin to pay for the magazine.”
In context“In the old detective novel, the protagonist slipped the informant a fin in exchange for the address of the warehouse.”
Synonyms - 05 C1 Advanced
v.to cut the fins off a fish, especially a shark.
v.to remove the fins from a fish, often used in the context of the controversial practice of shark finning.
Simple“Many countries have banned the practice of finning sharks at sea.”
In context“The environmental agency reported that thousands of sharks are illegally finned every year to satisfy the demand for specialty soups.”