3: Some intestinal divisions
12: Word following eye or nose
21: Frequent Las Vegas money taker
29: Preceder of box or light, in slang
31: Word before irons or chains
40: Word in seven Hope titles
48: Cause of a bad air day
50: Archaeology venue, at times
52: Responds correctly on 'Jeopardy!'
55: Shower affection (on)