Any substance which dissolves a solid body; a solvent.

(archaic) a solvent

a liquid solvent (or solvent combination) that one uses to extract plant constituents from an herb

the monthly discharge of blood from the uterus of nonpregnant women from puberty to menopause; "the women were sickly and subject to excessive menstruation"; "a woman does not take the gout unless her menses be stopped"--Hippocrates; "the semen begins to appear in males and to be emitted at the same time of life that the catamenia begin to flow in females"--Aristotle