Shield
A shield was an instrument of defense, carried in hand, and used to protect an individual by intercepting attacks from hand-held weapons, such as swords.

On the planet Taurus II in 2267, anthropoids living there had gigantic shields. Immediately after being shot by Spock wielding a phaser, one of the anthropoids threw its shield at Spock and a pair of accompanying officers under his command – Lieutenants Boma and Gaetano. ()

A year later, after Spock, Doctor McCoy, and Captain Kirk saved the life of Parmen during an away mission to Platonius, Kirk was awarded a shield originally carried by Pericles by the grateful Platonians. ()

Shields were also used in defense when Kirk, Spock, and McCoy were forced to fight for a public spectacle later in 2268, around stardate 4041.2. ()

Starfleet is known to have issued at least one type of shield to its forces in the late 23rd century. In 2287, the Enterprise was sent to the Planet of Galactic Peace, Nimbus III, to rescue ambassadors who had been taken hostage. The security forces were issued translucent riot shields that could be rolled up and stowed atop their backpacks. () 

The Bandi Groppler Zorn had three shields hanging as wall decorations in his office in Old Bandi City on Deneb IV in 2364. ()

A targe was a type of Scottish shield, and Montgomery Scott used one as a wall hanging, along with other Scottish objects. ()

See also 
 Armor
 Shieldmaiden

External link 
 

fr:Bouclier
pl:Tarcza
Shield technology