Source : Webster's Revised Unabridged Dictionary (1913)

Weakling \Weak"ling\, n. [Weak + -ling.]
   A weak or feeble creature. --Shak. ``All looking on him as a
   weakling, which would post to the grave.'' --Fuller.

         We may not be weaklings because we have a strong enemy.
                                                  --Latimer.

Weakling \Weak"ling\, a.
   Weak; feeble. --Sir T. North.

Source : WordNet®

weakling
     n : a person who is physically weak and ineffectual [syn: {doormat},
          {wuss}]