Etymology 1
From a- + grin.
Adjective
agrin (not comparable)
- grinning; having happiness or satisfaction apparent on one's face
1847, Alfred Tennyson, The Princess:Yea, let her see me fall! and with that I drave
Among the thickest and bore down a Prince,
And Cyril, one. Yea, let me make my dream
All that I would. But that large-moulded man,
His visage all agrin as at a wake,
Made at me through the press, and, staggering back
With stroke on stroke the horse and horseman, came
As comes a pillar of electric cloud,
Flaying the roofs and sucking up the drains,
And shadowing down the champaign till it strikes
1849, Currer Bell [pseudonym; Charlotte Brontë], chapter 3, in Shirley. A Tale. […], volume (please specify |volume=I to III), London: Smith, Elder and Co., […], →OCLC:When a ray from a lantern (the three pedestrians of the party carried each one) fell on Mr. Moore's face, you could see an unusual, because a lively, spark dancing in his eyes, and a new-found vivacity mantling on his dark physiognomy; and when the rector's visage was illuminated, his hard features were revealed all agrin and ashine with glee.
Etymology 2
From AGRN (“the name of the associated gene”) + -in.
Anagrams
- A ring, Grain, IgNAR, Ngari, Nigra, Ragin, Rigan, grain, nigra, raign, raing