balk

noun

1.
the area on a billiard table behind the balkline
baulk
Exemplifies:
American spelling
2.
something immaterial that interferes with or delays action or progress
rightening baulk check deterrent handicap hinderance hindrance impediment
Exemplifies:
American spelling
3.
one of several parallel sloping beams that support a roof
highroof sile baulk rafter
Exemplifies:
American spelling
4.
an illegal pitching motion while runners are on base
Derived from:
balky