Possible Clues:

• Type of shoe
• During fight, briefly cock weapon
• Footwear that's also a weapon
• Part of a dominatrix's outfit
• It's back for hire to heel
• Knife fight about where the cash is kept mostly
• Roofer's material dry inside this part of boot?
• Skinny blade
• Thin high heel
• T.S. Eliot wrong about leading edge of table knife