balk

Noun

• an illegal pitching motion while runners are on base

• one of several parallel sloping beams that support a roof

• something immaterial that interferes with or delays action or progress

• the area on a billiard table behind the balkline
  • a player with ball in hand must play from the balk
    

Verb

• refuse to comply

Related words

• Synonyms: 
  rafter , baulk , hindrance , hinderance , deterrent , impediment , check , handicap , resist , jib