shield

nouns

a protective covering or structure
shield
is a type of (narrower)
a covering that is intend to protect from damage or injury
"they had no protection from the fallout"; "wax provided protection for the floors"
protection, protective cover, protective covering
armor carried on the arm to intercept blows
buckler, shield
hard outer covering or case of certain organisms such as arthropods and turtles
carapace, cuticle, shell, shield

verbs

protect, hide, or conceal from danger or harm
screen, shield
is derived from
shielder
is derived from
shielding
hold back a thought or feeling about
"She is harboring a grudge against him"
harbor, harbour, shield