a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants

of or relating to the mucous membranes and skin

a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid

(pregnancy) the mucous membrane that lines the uterus; thickens under hormonal control and (if pregnancy does not occur) is shed in menstruation; if pregnancy occurs it is shed along with the placenta at parturition

a fold of tissue that partly covers the entrance to the vagina of a virgin