baulk

from WordNet (r) 3.0 (2006)

baulk
    n 1: the area on a billiard table behind the balkline; "a player
         with ball in hand must play from the balk" [syn: {balk},
         {baulk}]
    2: something immaterial that interferes with or delays action or
       progress [syn: {hindrance}, {hinderance}, {deterrent},
       {impediment}, {balk}, {baulk}, {check}, {handicap}]
    3: one of several parallel sloping beams that support a roof
       [syn: {rafter}, {balk}, {baulk}]
    v 1: refuse to comply [syn: {resist}, {balk}, {baulk}, {jib}]

from The Collaborative International Dictionary of English v.0.48

Bauk \Bauk\, Baulk \Baulk\, n. & v.
   See {Balk}.
   [1913 Webster]