19: Nerve impulse transmission site
21: Most derogatory, as a remark
25: Killer ___ (excellent computer program)
37: Wart giver of folklore
53: Spreadsheet divisions
55: Gigantic 'Arabian Nights' flyer
61: Makes safe for drinking, as water
70: 'Treasure Island' pirate
71: Word with worm or moth
72: Ship, figuratively speaking