The Collaborative International Dictionary of English v.0.48:

Manducable \Man"du*ca*ble\, a. [Cf. F. manducable. See
   Manducate.]
   Such as can be chewed; fit to be eaten. [R.]
   [1913 Webster]

         Any manducable creature.                 --Sir T.
                                                  Herbert.
   [1913 Webster]