Source : Webster's Revised Unabridged Dictionary (1913)

Milksop \Milk"sop`\, n.
   A piece of bread sopped in milk; figuratively, an effeminate
   or weak-minded person. --Shak.

         To wed a milksop or a coward ape.        --Chaucer.

Source : WordNet®

milksop
     n : a timid man or boy considered childish or unassertive [syn:
         {sissy}, {pantywaist}, {pansy}, {Milquetoast}]