SCUTUM
Etymology
Noun
scutum (plural scuta)
(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.
(zoology) A scute.
(zoology) A shield-like protection, such as the scutum protecting the back of a hard tick (cf. alloscutum, conscutum)
(zoology) One of the two lower valves of the operculum of a barnacle.
(anatomy) The kneecap.
Etymology
Proper noun
Scutum
(constellation) A small autumn constellation of the northern sky, said to resemble a shield. It lies between the constellations of Aquila, Sagittarius, and the tail of Serpens.
Source: Wiktionary
Scu"tum, n.; pl. Scuta. Etym: [L.]
1. (Rom. Antiq.)
Definition: An oblong shield made of boards or wickerwork covered with
leather, with sometimes an iron rim; -- carried chiefly by the heavy-
armed infantry.
2. (O. Eng. Law)
Definition: A penthouse or awning. [Obs.] Burrill.
3. (Zoöl.)
(a) 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.
(b) One of the two lower valves of the operculum of a barnacle.
Source: Webster’s Unabridged Dictionary 1913 Edition