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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
Lennon's a winner grinner Former Celtic boss Neil Lennon wore a broad smile after watching his Bolton side make it it two wins from three games in his charge.
From those early days Tom, nicKnamed 'The Grinner', has steadily progressed earning plum British SuperbiKe rides with Stobart Honda and Rizla SuzuKi until he gained a wildcard entry onto the World SuperbiKe stage.
With: Hani Shukrallah, Asmaa Mahfouz, Ahmed Maher, Gigi lbrahim, Amr Waked, Heba Morayef, Frank grinner, Abdallah Helmy.
The Grinner promptly took victory in the second contest however with Biaggi claiming fifth spot - the lowest he could finish to take the title - victory went to Sykes' rival.
Young grinner: Thomas Littler Picture: CHRIS LOUFTE
'The ute is as Australian as Vegemite or Kylie,' declares a ringer (cowboy) called Grinner, who is holed up at the Burke and Wills Roadhouse in Queensland for a season of mustering.
Goodfellas pizza company is looking for the 'smiliest' place in the UK and has launched the Winner Grinner competition.
Trooper Finney managed to get out of his driving position and was on the way towards cover when he noticed that his vehicle's grinner was trapped in the turret.
Granddaddy Henry Grinner said no matter where you go in the world and no matter what you see, somewhere up in there you will find a negro.
grinner to winner Tiger Woods has fun with the crowd after putting himself in contention to end barren run
That leaves Sykes with a mountain to climb at the season finale at Magny Cours on October 7 with just 50 points available however the Grinner refused to be downcast.