■ verb ( ~s , ~ning , ~ned )
1》 smile broadly.
2》 grimace grotesquely in a way that reveals the teeth.
■ noun a broad smile.
Phrases
~ and bear it suffer pain or misfortune in a stoical manner.
Derivatives
~ner noun
~ning adjective
~ningly adverb
Origin
OE grennian 'bare the teeth in pain or anger', of Gmc origin; prob. related to groan .