Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Verb: grin (grinned,grinning)  grin
  1. To draw back the lips and reveal the teeth, in a smile, grimace, or snarl
Noun: grin  grin
  1. A facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement
    - smile, smiling, grinning

Derived forms: grins, grinning, grinned

Type of: facial expression, facial gesture, smile

Encyclopedia: Grin, Alexander