Defn: In the act of grinning. "His visage all agrin." Tennyson.

AGRIOLOGIST
Ag`ri*ol"o*gist, n.

Defn: One versed or engaged in agriology.

AGRIOLOGY
Ag`ri*ol"o*gy, n. Etym: [Gr. -logy.]

Defn: Description or comparative study of the customs of savage or uncivilized tribes.

AGRISE
A*grise", v. i. Etym: [AS. agrisan to dread; a- (cf. Goth. us-, Ger.
er-, orig. meaning out) + grisan, for gr (only in comp.), akin to
OHG. gr, G. grausen, to shudder. See Grisly.]

Defn: To shudder with terror; to tremble with fear. [Obs.] Chaucer.

AGRISE
A*grise", v. t.

1. To shudder at; to abhor; to dread; to loathe. [Obs.] Wyclif.

2. To terrify; to affright. [Obs.] His manly face that did his foes agrise. Spenser.