Scutum

·noun A penthouse or awning.

II. Scutum ·noun One of the two lower valves of the operculum of a barnacle.

III. Scutum ·noun An oblong shield made of boards or wickerwork covered with leather, with sometimes an iron rim;

— carried chiefly by the heavy-armed infantry.

IV. Scutum ·noun 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.