Source : Webster's Revised Unabridged Dictionary (1913)

Balker \Balk"er\, n. [See 2d {Balk}.]
   One who, or that which balks.

Balker \Balk"er\, n. [See last {Balk}.]
   A person who stands on a rock or eminence to espy the shoals
   of herring, etc., and to give notice to the men in boats
   which way they pass; a conder; a huer.

Source : WordNet®

balker
     n : a person who refuses to comply [syn: {baulker}, {noncompliant}]