Hypertext Webster Gateway: "grinning"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Grin \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.
From WordNet (r) 1.7 (wn)
grinning
n : a facial expression characterized by turning up the corners
of the mouth; usually shows pleasure or amusement [syn: {smile},
{smiling}, {grin}]
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