Nouns

(n)balk, baulkthe area on a billiard table behind the balkline“a player with ball in hand must play from the balk”
(n)hindrance, hinderance, deterrent, impediment, balk, baulk, check, handicapsomething immaterial that interferes with or delays action or progress
(n)rafter, balk, baulkone of several parallel sloping beams that support a roof

Verbs

(v)resist, balk, baulk, jibrefuse to comply