The water where the brook is deep. --Shak.
2. Extending far back from the front or outer part; of great
horizontal dimension (measured backward from the front or
nearer part, mouth, etc.); as, a deep cave or recess or
wound; a gallery ten seats deep; a company of soldiers six
files deep.
Shadowing squadrons deep. --Milton.
Safely in harbor Is the king's ship in the deep
nook. --Shak.
3. Low in situation; lying far below the general surface; as,
a deep valley.
4. Hard to penetrate or comprehend; profound; -- opposed to
shallow or superficial; intricate; mysterious; not
obvious; obscure; as, a deep subject or plot.
Speculations high or deep. --Milton.
A question deep almost as the mystery of life. --De
Quincey.
O Lord, . . . thy thoughts are very deep. --Ps.
xcii. 5.
5. Of penetrating or far-reaching intellect; not superficial;
thoroughly skilled; sagacious; cunning.
Deep clerks she dumbs. --Shak.
6. Profound; thorough; complete; unmixed; intense; heavy;
heartfelt; as, deep distress; deep melancholy; deep
horror. ``Deep despair.'' --Milton. ``Deep silence.''
--Milton. ``Deep sleep.'' --Gen. ii. 21. ``Deeper
darkness.'' -->Hoole. ``Their deep poverty.'' --2 Cor.
viii. 2.
An attitude of deep respect. --Motley.
7. Strongly colored; dark; intense; not light or thin; as,
deep blue or crimson.
8. Of low tone; full-toned; not high or sharp; grave; heavy.
``The deep thunder.'' --Byron.
The bass of heaven's deep organ. --Milton.
9. Muddy; boggy; sandy; -- said of roads. --Chaucer.
The ways in that vale were very deep. --Clarendon.
{A deep line of operations} (Military), a long line.
{Deep mourning} (Costume), mourning complete and strongly
marked, the garments being not only all black, but also
composed of lusterless materials and of such fashion as is
identified with mourning garments.