shield

Noun

• hard outer covering or case of certain organisms such as arthropods and turtles

• armor carried on the arm to intercept blows

• a protective covering or structure

Verb

• hold back a thought or feeling about
  • She is harboring a grudge against him
    

• protect, hide, or conceal from danger or harm

Related words

• Synonyms: 
  carapace , shell , cuticle , buckler , harbor , harbour , screen