GRIN

smile, smiling, grin, grinning

(noun) a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

grin

(verb) to draw back the lips and reveal the teeth, in a smile, grimace, or snarl

Source: WordNet® 3.1

Etymology 1

Noun

grin (plural grins)

A smile in which the lips are parted to reveal the teeth.

Verb

grin (third-person singular simple present grins, present participle grinning, simple past and past participle grinned)

(intransitive) To smile, parting the lips so as to show the teeth.

(transitive) To express by grinning.

(intransitive, dated) To show the teeth, like a snarling dog.

(transitive) To grin as part of producing a particular facial expression, such as a smile or sneer.

Etymology 2

Noun

grin (plural grins)

(obsolete) A snare; a gin.

Anagrams

• NGRI, Ring, girn, ring

Source: Wiktionary

Grin, n. Etym: [AS. grin.]

Definition: A snare; a gin. [Obs.] Like a bird that hasteth to his grin. Remedy of Love.

Grin, v. i. [imp. & p. p. Grinned; p. pr. & vb. n. Grinning.] Etym: [OE. grinnen, grennen, AS. grennian, Sw. grina; akin to D. grijnen, G. greinen, OHG. grinan, Dan. grine. Groan.]

1. To show the teeth, as a dog; to shsrl.

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, v. t.

Definition: To express by grinning. Grinned horrible a ghastly smile.Milton.

Grin, n.

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition