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v. grinned, grin·ning, grins
To smile broadly, often baring the teeth, as in amusement, glee, embarrassment, or other strong emotion.
To express with a grin: I grinned my approval.
1. The act of grinning.
2. The facial expression produced by grinning.

[Middle English grennen, to grimace, from Old English grennian.]

grin′ner n.
grin′ning·ly adv.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.grinner - a person who grins
individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do"
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References in periodicals archive ?
Gobiesocidae, Saccopha ryngiformes, Aulopiformes, Synbranchidae, and Blenniidae, among others) that have also lost the swim bladder but are symmetrical.
Nuevos registros icticos en el talud superior del Caribe colombiano (ordenes Albuliformes, Anguilliformes, Osmeriformes, Stomiiformes, Ateleopodiformes, Aulopiformes y Pleuronectiformes).