Source : Webster's Revised Unabridged Dictionary (1913)

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.

         Some herbs are most comestible.          --Sir T.
                                                  Elyot.

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

Source : WordNet®

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