Defn: To butt, as a ram. [Obs.]

ARIETATION
Ar`i*e*ta"tion, n. Etym: [L. arietatio.]

1. The act of butting like a ram; act of using a battering-ram. [Obs.] Bacon.

2. Act of striking or conflicting. [R.] Glanvill.

ARIETTA; ARIETTE A`ri*et"ta, Ar`i*ette", n. Etym: [It. arietta, dim. of aria; F. ariette.] (Mus.)

Defn: A short aria, or air. "A military ariette." Sir W. Scott.

ARIGHT
A*right", adv. Etym: [Pref. a- + right.]

Defn: Rightly; correctly; in a right way or form; without mistake or crime; as, to worship God aright.

ARIL; ARILLUS Ar"il, A*ril"lus, n. Etym: [From LL. arilli dry grapes, perh. fr. L. aridus dry: cf. F,. arille.] (Bot.)

Defn: A exterior covering, forming a false coat or appendage to a seed, as the loose, transparent bag inclosing the seed or the white water lily. The mace of the nutmeg is also an aril. Gray.