euphemistic. Necessary bodily function, spec. evacuation of the bowels or bladder; an act of defecation or urination. In later use chiefly in plural…

A necessary bodily function; an act of urination or defecation. Obsolete. rare.

An occasion or time of need, a difficulty. Obsolete.

a natural activity performed by the human body; (now esp.) flatulence, defecation, or another excretory function.

An act of defecation. Also necessary occasion. Chiefly in plural. Now rare and English regional.

The action of toilet, v. (in various senses); an instance of this.

euphemistic. A need of the human body to defecate or urinate. Frequently with nature, natural, as in call of nature at nature, n. 4d.

The discharging, emitting, or evacuation of something (now only of the bladder or bowel); = voidance, n. 1a.