(1):

(a.) Drawing together the tissues; binding; contracting; - opposed to laxative; as, astringent medicines; a butter and astringent taste; astringent fruit.

(2):

(a.) Stern; austere; as, an astringent type of virtue.

(3):

(n.) A medicine or other substance that produces contraction in the soft organic textures, and checks discharges of blood, mucus, etc.