agrin

Grinning; having happiness or satisfaction apparent on one's face.

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

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.

a protein involved in the formation of neuromuscular junctions during embryonic development