Meanings
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1
noun
a large mostly white seabird of the genus Morus that catches fish by plunging steeply into the sea
The gannet folded its wings and dived headfirst into the water.
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2
noun
informal, especially British: a greedy or voracious eater
He was such a gannet that no food remained after lunch.
Thesaurus
Etymology
From Middle English ganet and Old English ganot, a Germanic bird name related to words for a gander or goose. The informal sense 'greedy eater' arose from the seabird's conspicuous feeding behavior.