Scutum

Origin

From Latin scūtum ("shield").

Full definition of scutum

Noun

1. (historical, Roman antiquity) An oblong shield made of boards or wickerwork covered with leather, with sometimes an iron rim; carried chiefly by the heavy-armed infantry of the Roman army.
2. (zoology) A scute.
3. (zoology) One of the two lower valves of the operculum of a barnacle.
4. (obsolete) A penthouse or awning.----