Webster's Revised Unabridged Dictionary · 1913

Shield

Shield , noun

[Old English sheld, scheld, Anglo-Saxon scield, scild, sceld, scyld; akin to Old Saxon scild, OFries. skeld, Dutch & German schild, Old High German scilt, Icelandic skjoldr, Swedish skold, Danish skiold, Gothic skildus; of uncertain origin. Compare Sheldrake.]

1.
A broad piece of defensive armor, carried on the arm, -- formerly in general use in war, for the protection of the body. See Buckler.
Now put your shields before your hearts and fight, With hearts more proof than shields. — Shakespeare
2.
Anything which protects or defends; defense; shelter; protection.
My council is my shield. — Shakespeare
3.
Figuratively, one who protects or defends.
Fear not, Abram; I am thy shield, and thy exceeding great reward. — Gen. xv. 1
4.
(Botany) In lichens, a Hardened cup or disk surrounded by a rim and containing the fructification, or asci.
5.
(Heraldry) The escutcheon or field on which are placed the bearings in coats of arms. Compare Lozenge.
6.
(Mining & Tunneling) A framework used to protect workmen in making an adit under ground, and capable of being pushed along as excavation progresses.
7.
A spot resembling, or having the form of, a shield.
Bespotted as with shields of red and black. — Spenser
8.
A coin, the old French crown, or écu, having on one side the figure of a shield. [Obsolete] — Chaucer
Collocations (1)
Shield fern (Botany) , any fern of the genus Aspidium, in which the fructifications are covered with shield-shaped indusia; -- called also wood fern.

Shield , transitive verb

[Anglo-Saxon scidan, scyldan. See Shield, n.]

1.
To cover with, or as with, a shield; to cover from danger; to defend; to protect from assault or injury.
Shouts of applause ran ringing through the field, To see the son the vanquished father shield. — Dryden
A woman's shape doth shield thee. — Shakespeare
2.
To ward off; to keep off or out.
They brought with them their usual weeds, fit to shield the cold to which they had been inured. — Spenser
3.
To avert, as a misfortune; hence, as a supplicatory exclamation, forbid! [Obsolete]
God shield that it should so befall. — Chaucer
God shield I should disturb devotion! — Shakespeare