Defn: Money or other valuable thing given to evidence a contract; a pledge or earnest.

ARRHAPHOSTIC
Ar`rha*phos"tic, a. Etym: [Gr.

Defn: Seamless. [R.]

ARRHIZAL; ARRHIZOUS
Ar*rhi"zal, Ar*rhi"zous, a. Etym: [Gr. (Bot.)

Defn: Destitute of a true root, as a parasitical plant.

ARRHYTHMIC; ARRHYTHMOUS
Ar*rhyth"mic, Ar*rhyth"mous, a. Etym: [Gr. (Med.)

Defn: Being without rhythm or regularity, as the pulse.

ARRHYTMY
Ar"rhyt*my, n. Etym: [Gr.

Defn: Want of rhythm. [R.]

ARRIDE
Ar*ride", v. t. Etym: [L. arridere; ad + ridere to laugh.]