The Collaborative International Dictionary of English v.0.48:

Comestible \Co*mes"ti*ble\, a. [F. comestible, fr. L. comesus,
   comestus, p. p. of comedere to eat; com- + edere to eat.]
   Suitable to be eaten; eatable; esculent.
   [1913 Webster]

         Some herbs are most comestible.          --Sir T.
                                                  Elyot.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Comestible \Co*mes"ti*ble\, n.
   Something suitable to be eaten; -- commonly in the plural.
   --Thackeray.
   [1913 Webster]

WordNet (r) 3.0 (2006):

comestible
    adj 1: suitable for use as food [syn: edible, comestible,
           eatable] [ant: inedible, uneatable]
    n 1: any substance that can be used as food [syn: comestible,
         edible, eatable, pabulum, victual, victuals]