Noun

(en noun)

The vertical distance below a surface; the degree to which something is deep.

Measure the depth of the water in this part of the bay.

The distance between the front and the back, as the depth of a drawer or closet.

(figuratively) The intensity, complexity, strength, seriousness or importance of an emotion, situation, etc.

The depth of her misery was apparent to everyone.

The depth of the crisis had been exaggerated.

We were impressed by the depth of her knowledge.

Lowness.

the depth of a sound

(computing, colors) The total palette of available colors.

(arts, photography) The property of appearing three-dimensional.

The depth of field in this picture is amazing.

(literary, usually plural) The deepest part. (Usually of a body of water.)

The burning ship finally sunk into the depths .

(literary, usually plural) A very remote part.

Into the depths of the jungle...

In the depths of the night,

The most severe part.

in the depth of the crisis

in the depths of winter

(logic) The number of simple elements which an abstract conception or notion includes; the comprehension or content.

(horology) A pair of toothed wheels which work together.

(statistics) The lower of the two ranks of a value in an ordered set of values.

{{examples-right, width=40%, sense=statistics, examples=

	Ordered Batch of 9 Values
Value	15	32	45	48	49	56	69	77	97
Depth	1	2	3	4	5	4	3	2	1

}}

Noun

(en noun)

An action, state of mind, or object one has an obligation to perform for another, adopt toward another, or give to another.

* 1589 , (William Shakespeare), Henry IV, Part I , act 1, sc. 3,

Revenge the jeering and disdain'd contempt

Of this proud king, who studies day and night

To answer all the debt he owes to you

Even with the bloody payment of your deaths.

* 1850 , (Nathaniel Hawthorne), (The Scarlet Letter) , ch. 14,

This long debt of confidence, due from me to him, whose bane and ruin I have been, shall at length be paid.

The state or condition of owing something to another.

Money that one person or entity owes or is required to pay to another, generally as a result of a loan or other financial transaction.

* 1919 , (Upton Sinclair), Jimmie Higgins , ch. 15,

Bolsheviki had repudiated the four-billion-dollar debt which the government of the Tsar had contracted with the bankers.

* {{quote-magazine, date=2013-06-22, volume=407, issue=8841, page=70, magazine=(The Economist)

, title= Engineers of a different kind , passage=Private-equity nabobs bristle at being dubbed mere financiers. Piling debt onto companies’ balance-sheets is only a small part of what leveraged buy-outs are about, they insist. Improving the workings of the businesses they take over is just as core to their calling, if not more so. Much of their pleading is public-relations bluster.}}

(legal) An action at law to recover a certain specified sum of money alleged to be due.

(Burrill)