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, acorn, or pain. The pangs of death do make him grin. Shak.
GRIN
Grin, v. t.
Defn: To express by grinning.
Grinned horrible a ghastly smile.Milton.
GRIN
Grin, n.
Defn: The act of closing the teeth and showing them, or of withdrawing the lips and showing the teeth; a hard, forced, or smeering smile. I.Watts. He showed twenty teeth at a grin. Addison.
GRIND
Grind, v. t. [imp. & p. p. Ground; p. pr. & vb. n. Grinding.] Etym:
[AS. grindan; perh. akin to L. frendere to gnash, grind. Cf. Grist.]
1. To reduce to powder by friction, as in a mill, or with the teeth; to crush into small fragments; to produce as by the action of millstones. Take the millstones, and grind meal. Is. xivii. 2.
2. To wear down, polish, or sharpen, by friction; to make smooth, sharp, or pointed; to whet, as a knife or drill; to rub against one another, as teeth, etc.
3. To oppress by severe exactions; to harass. To grind the subject or defraud the prince. Dryden.
4. To study hard for examination. [College Slang]