D defs.my
Entry 2 senses Webster, 1913

Declivity

· De·cliv·i·ty · IPA /dɪˈklɪvɪti/
01 n. Deviation from a horizontal line; gradual descent of surface; inclination downward; slope; -- opposed to acclivity, or ascent; the same slo…
pl. Declivities ((#))
  1. 1.
    Deviation from a horizontal line; gradual descent of surface; inclination downward; slope; -- opposed to acclivity, or ascent; the same slope, considered as descending, being a declivity, which, considered as ascending, is an acclivity.
  2. 2.
    A descending surface; a sloping place.
    “Commodious declivities and channels for the passage of the waters.” — Derham.