From Longman Dictionary of Contemporary Englishtoothy smile/grintoothy smile/grinHBAa smile in which you show a lot of teeth He grinned a wide, toothy grin. → toothy
Examples from the Corpus
toothy smile/grin• Her son holding his head beside the big carved pumpkin, mimicking a wide, toothy grin.• Those who remembered him with his barrow recalled a cheerful, toothy smile, an infectious, confidence-inspiring laugh.• Bafflingly for Barry, his hairy chest, toothy grin and even his ale and hearty tum couldn't win her over.• He gave her a wide toothy grin, and immediately realized it was exactly the wrong approach.• The vessel features Major giving a toothy grin, considerably broader than the one on the Thatcher mug.• The toothy grin of this naturally modest farmer's son was less than villainous at the finish.• He is small for his age with large brown eyes, a toothy smile, sloping shoulders and a readiness to please.• Mike Dawson was sitting at a dead computer, strumming the keyboard and offering a toothy smile to an invisible audience. 