A Quick and Simple Dictionary

shield

1. Noun.  A broad piece of defensive armor, carried on the arm, formerly in general use in war, for the protection of the body.
2. Noun.  Anything which protects or defends; defense; shelter; protection.
3. Noun.  Figuratively, one who protects or defends.
4. Noun.  (botany) In lichens, a hardened cup or disk surrounded by a rim and containing the fructification, or asci.
5. Noun.  (heraldry) The escutcheon or field on which are placed the bearings in coats of arms.
6. Noun.  (geology) A large expanse of exposed stable Precambrian rock.
7. Noun.  (mining) A framework used to protect workmen in making an adit under ground, and capable of being pushed along as excavation progresses.
8. Noun.  A spot resembling, or having the form of a shield.
9. Noun.  (quote-book, passage Bespotted as with '''shields''' of red and black.) .
10. Noun.  (obsolete) A coin, the old French crown, or écu, having on one side the figure of a shield.
11. Noun.  (science fiction) A field of energy which protects or defends.
12. Noun.  (colloquial, law enforcement) A police badge.
13. Noun.  (transport) A sign or symbol, usually containing numbers and sometimes letters, identifying a highway route.
14. Verb.  To protect, to defend.
15. Verb.  (electricity) to protect from the influence of.