The Collaborative International Dictionary of English v.0.48:

Bespot \Be*spot"\ (b[-e]*sp[o^]t"), v. t. [imp. & p. p.
   Bespotted; p. pr. & vb. n. Bespotting.]
   To mark with spots, or as with spots.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bespot
    v 1: mark with, or as if with, spots