GRIS is a 4 letter word that starts with G.

1. \Gris\, a. [OF. & F., fr. LL. griseus; of German origin;
   cf. MHG. gris, G. greis, hoary. Cf. {Grizzle}.]
   Gray. [R.] --Chaucer.
   
   

2. \Gris\, n. [OF., fr. gris gray. Cf. G. grauwerk (lit. gray
   work) the gray skin of the Siberian squirrel. See {Gris}, a.]
   A costly kind of fur. [Obs.] --Chaucer.
   
   

3. \Gris\ (gr[i^]s), n. sing. & pl. [See {Grice} a pig.]
   A little pig. [Obs.] --Piers Plowman.