The Collaborative International Dictionary of English v.0.48:

Devex \De*vex"\, a. [L. devexus, from devehere to carry down.]
   Bending down; sloping. [Obs.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Devex \De*vex"\, n.
   Devexity. [Obs.] --May (Lucan).
   [1913 Webster]