D defs.my
Entry 8 senses Webster, 1913

Depth

/(sĕpth)/ · IPA /dɛpθ/
01 n. The quality of being deep; deepness; perpendicular measurement downward from the surface, or horizontal measurement backward from the front…
  1. 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. 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. 3.
    Lowness; as, depth of sound.
  4. 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. 5.
    The number of simple elements which an abstract conception or notion includes; the comprehension or content.(Logic)
  6. 6.
    A pair of toothed wheels which work together.(Horology) [R.]
  7. 7.
    The perpendicular distance from the chord to the farthest point of an arched surface.(Aëronautics)
  8. 8.
    the maximum number of times a type of procedure is reiteratively called before the last call is exited; -- of subroutines or procedures which are reentrant; -- used of call stacks.(Computers)
Phrases & compounds
Depth of a sail — the extent of a square sail from the head rope to the foot rope; the length of the after leach of a staysail or boom sail; -- commonly called the drop of a sail.