Depth

Part of speech: noun (n.)

1. The quality of being deep; deepness; perpendicular measurement downward from the surface,or horizontal measurement backward from the front; as, the depth of a river; the depth of a body of troops.

2. Profoundness; extent or degree of intensity; abundance; completeness; as, depth of knowledge, or color. Mindful of that heavenly love Which knows no end in depth or height. Keble.

3. Lowness; as, depth of sound.

4. That which is deep; a deep, or the deepest, part or place; the deep; the middle part; as, the depth of night, or of winter. From you unclouded depth above. Keble. The depth closed me round about. Jonah ii. 5.

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

6. A pair of toothed wheels which work together. [R.]