Source : Webster's Revised Unabridged Dictionary (1913)

Erose \E*rose"\, a. [L. erosus, p. p. See {Erode}.]
   1. Irregular or uneven as if eaten or worn away.

   2. (Bot.) Jagged or irregularly toothed, as if nibbled out or
      gnawed. -- {E*rose"ly}, adv.

Source : WordNet®

erose
     adj : having an irregularly notched or toothed margin as though
           gnawed [syn: {jagged}, {jaggy}, {notched}, {toothed}]