devexity

from The Collaborative International Dictionary of English v.0.48

Devexity \De*vex"i*ty\, n. [L. devexitas, fr. devexus. See
   {Devex}, a.]
   A bending downward; a sloping; incurvation downward;
   declivity. [R.] --Davies (Wit's Pilgr.)
   [1913 Webster]