fin

• Существительное, обозначающее тонкий плоский придаток на теле рыбы или другого водного животного, используемый для движения, управления и равновесия.

A noun referring to a thin, flat appendage on the body of a fish or other aquatic animal, used for propulsion, steering, and balance.

1. Fish appendageA2formal

   A thin, flat part on the body of a fish, used for swimming and steering.

   Плавник

   • The shark's dorsal fin cut through the water.
   • Fish use their fins to change direction quickly.
   • The tropical fish had brightly colored fins.

2. Aircraft or vehicle partB2formal

   A fixed or adjustable vertical or horizontal surface on an aircraft, car, or boat for stability.

   Стабилизатор

   • The airplane's tail fin helps maintain stability during flight.
   • The car's rear fin was a popular design in the 1950s.
   • The boat's fin keel prevents it from capsizing.

   Synonymsstabilizertail fin

• Глагол, означающий плавать или передвигаться в воде с помощью плавников, или оснащать плавниками.

A verb meaning to swim or move through water using fins, or to equip with fins.

1. To swim using finsB2informal

   To swim or move through water using fins, typically in diving or snorkeling.

   Плыть с ластами

   • The diver finned gracefully through the coral reef.
   • She finned slowly to avoid startling the fish.
   • He finned his way to the surface for air.

   Synonymsflipper

2. To equip with finsC1formal

   To attach or provide fins to something, such as a vehicle or equipment.

   Оснастить плавниками

   • The engineers finned the rocket for better stability.
   • They finned the surfboard to improve its performance.
   • The car was finned for aerodynamic efficiency.