Pleura /(?)/

Pleu·ra

Pleura

n.
  1. pl. of Pleuron.

Pleura

n.

pl. Pleuræ, Pleuras

  1. The smooth serous membrane which closely covers the lungs and the adjacent surfaces of the thorax; the pleural membrane. (Anat.)
  2. Same as Pleuron. (Zool.)