(1):

(n.) The second and largest of the four parts forming the upper surface of a thoracic segment of an insect. It is preceded by the prescutum and followed by the scutellum. See the Illust. under Thorax.

(2):

(n.) One of the two lower valves of the operculum of a barnacle.

(3):

(n.) An oblong shield made of boards or wickerwork covered with leather, with sometimes an iron rim; - carried chiefly by the heavy-armed infantry.

(4):

(n.) A penthouse or awning.