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  1. Oxford American Dictionary

    fin

    • IPA[fin]

    美式

    • n.
      a flattened appendage on various parts of the body of many aquatic vertebrates and some invertebrates, including fish and cetaceans, used for propelling, steering, and balancing.；an underwater swimmer's flipper.
    • v.
      swim underwater by means of flippers

    • verb: fin, 3rd person present: fins, gerund or present participle: finning, past tense: finned, past participle: finned

    • noun: fin, plural noun: fins

    • 釋義

    名詞

    • 1. a flattened appendage on various parts of the body of many aquatic vertebrates and some invertebrates, including fish and cetaceans, used for propelling, steering, and balancing.
    • ▪ an underwater swimmer's flipper.
    • ▪ a small flattened projecting surface or attachment on an aircraft, rocket, or automobile, providing aerodynamic stability or serving as a design element.
    • ▪ a flattened projection on a device, such as a radiator, used for increasing heat transfer.

    動詞

    • 1. swim underwater by means of flippers I finned madly for the surface