(1):
(n. fem.) Same as Pleuron.
(2):
(n. fem.) The closed sac formed by the pleural membrane about each lung, or the fold of membrane connecting each lung with the body wall.
(3):
(n.) pl. of Pleuron.
(4):
(n. fem.) The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane.
(5):
(pl.) of Pleuron