Webster's Revised Unabridged Dictionary · 1913

Aperient

Aperient ({not transcribed}) , adjective

[Latin aperiens, present participle of aperire to uncover, open; ab + parire, parere, to bring forth, produce. Compare Cover, Overt.]

(Medicine) Gently opening the bowels; laxative.
(Medicine) An aperient medicine or food. — Arbuthnot