noun
aquatic beetle that circles rapidly on the water surface
• Hypernyms: ↑beetle
• Member Holonyms: ↑Gyrinidae, ↑family Gyrinidae
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noun : any of numerous beetles of the family Gyrinidae that have a firm oval usually dark body with a bronzy luster and that live mostly on the surface of water where they move swiftly about in curves
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any of numerous aquatic beetles of the family Gyrinidae, commonly seen in groups circling about rapidly on the surface of the water.
[1850-55]
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whirligig beetle,
any one of a family of gregarious beetles that circle about on the surface of water.
Useful english dictionary. 2012.