Source : Webster's Revised Unabridged Dictionary (1913)

Erasable \E*ras"a*ble\, a.
   Capable of being erased.

Source : WordNet®

erasable
     adj : capable of being effaced;  "the fire's worst scars were
           effaceable by a comprehensive program of
           reforestation"; "a signal too loud to be erasable in a
           single pass through the erase head" [syn: {effaceable}]