Source : Webster's Revised Unabridged Dictionary (1913)

Belabor \Be*la"bor\, v. t. [imp. & p. p. {Belabored}; p. pr. &
   vb. n. {Belaboring}.]
   1. To ply diligently; to work carefully upon. ``If the earth
      is belabored with culture, it yieldeth corn.'' --Barrow.

   2. To beat soundly; to cudgel.

            Ajax belabors there a harmless ox.    --Dryden.

Source : WordNet®

belabor
     v 1: to work at or to absurd length; "belabor the obvious" [syn:
          {belabour}]
     2: attack verbally with harsh criticism; "She was belabored by
        her fellow students" [syn: {belabour}]
     3: beat soundly [syn: {belabour}]