Also found in: Thesaurus, Medical, Legal, Idioms, Encyclopedia, Wikipedia.


1. A broad piece of armor made of rigid material and strapped to the arm or carried in the hand for protection against hurled or thrusted weapons.
2. A person or thing that provides protection.
3. A protective device or structure, as:
a. A steel sheet attached to an artillery piece to protect gunners from small-arms fire and shrapnel.
b. Physics A wall or housing of concrete or lead built around a nuclear reactor to prevent the escape of radiation.
c. Electronics A structure or arrangement of metal plates or mesh designed to protect a piece of electronic equipment from electrostatic or magnetic interference.
d. A pad worn, as at the armpits, to protect a garment from perspiration.
e. A sanitary napkin.
4. Zoology A protective plate or similar hard outer covering; a scute or scutellum.
5. Something that resembles a shield, as:
a. An escutcheon.
b. A decorative emblem that often serves to identify an organization or a government.
c. A police officer's badge.
6. Geology The ancient, stable, interior layer of continents composed of primarily Precambrian igneous or metamorphic rocks. Also called continental shield.
v. shield·ed, shield·ing, shields
1. To protect from being attacked, exposed to danger, or subjected to difficulty: "a policymaking elite whose families and purses are shielded from the sacrifices war entails" (Uwe E. Reinhardt). See Synonyms at defend.
2. To cover up; conceal: "Though many eyes were watching, none could pierce the halo of morning sunlight that surrounded and shielded the hawk" (Peter Dunne).
To act or serve as a shield or safeguard.

[Middle English sheld, from Old English scield; see skel- in Indo-European roots.]

shield′er n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.shielder - a person who cares for persons or propertyshielder - a person who cares for persons or property
admonisher, monitor, reminder - someone who gives a warning so that a mistake can be avoided
bodyguard, escort - someone who escorts and protects a prominent person
paladin, champion, fighter, hero - someone who fights for a cause
chaperon, chaperone - one who accompanies and supervises a young woman or gatherings of young people
custodian, keeper, steward - one having charge of buildings or grounds or animals
fire fighter, fire-eater, firefighter, fireman - a member of a fire department who tries to extinguish fires
foster parent, foster-parent - a person who acts as parent and guardian for a child in place of the child's natural parents but without legally adopting the child
guard - a person who keeps watch over something or someone
keeper - someone in charge of other people; "am I my brother's keeper?"
law officer, lawman, peace officer - an officer of the law
patron saint - a saint who is considered to be a defender of some group or nation
peacekeeper - someone who keeps peace; "she's the peacekeeper in that family"
preserver - someone who keeps safe from harm or danger
tribune - (ancient Rome) an official elected by the plebeians to protect their interests
watchdog - a guardian or defender against theft or illegal practices or waste; "she is the global watchdog for human rights abuses"
References in periodicals archive ?
But he was unable to offer similar assurance against Lennon's high-tempo side, who drove the defensive shielder into submission courtesy of the work-rate and power of Neil Danns and Darren Pratley respectively.
Darren Fletcher is a disciplined player and a solid shielder of the defence but his lack of creativity will always be exposed at the highest level while Tom Cleverley has failed to show the necessary quality.
It would be more appropriate to list them all, but space limitations only allow a few examples: al-Rahim, "The Boundlessly Merciful; al-Quddus, All-Holy; al-Razzaq, The Ever-Providing; al-Basit, He Who expands, The Munificent; al-Mugsit, The Equitable, the Requiter; al Jami', The Assembler, the Uniter; al-Ghani, The Infinitely Rich; the Totally Independent; al-Mughni, The Enricher, The Availer; al-Mani', The Preventer, The Shielder, The Defender.