\Grin\ (gr[i^]n), n. [AS. grin.]
A snare; a gin. [Obs.]
      Like a bird that hasteth to his grin.    --Remedy of
                                               Love.

\Grin\, v. i. [imp. & p. p. {Grinned} (gr[i^]nd); p. pr. &
vb. n. {Grinning}.] [OE. grinnen, grennen, AS. grennian, Sw.
grina; akin to D. grijnen, G. greinen, OHG. grinan, Dan.
grine. [root]35. Cf. {Groan}.]
1. To show the teeth, as a dog; to snarl.
2. To set the teeth together and open the lips, or to open
   the mouth and withdraw the lips from the teeth, so as to
   show them, as in laughter, scorn, or pain.
         The pangs of death do make him grin.  --Shak.

\Grin\, v. t.
To express by grinning.
      Grinned horrible a ghastly smile.        --Milton.

\Grin\, n.
The act of closing the teeth and showing them, or of
withdrawing the lips and showing the teeth; a hard, forced,
or sneering smile. --I. Watts.
      He showed twenty teeth at a grin.        --Addison.