You can find definition of grin below. Words can have several meanings depending on the context. Their meaning may vary depending on where they are used. Please choose approriate definition according to part of speech and context. We have found 2 different definitions of grin. grin is a 4 letter word. It starts with g and ends with n.
a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement
to draw back the lips and reveal the teeth, in a smile, grimace, or snarl