Related Clues:

• Prevent from escaping
• Hidden obstacle
• Spider web, e.g.
• Sharp attack
• Rival of 13-Across
• Web, to a fly
• It may be sprung
• Speed __
• Word with ''bear'' or ''booby''
• Word with ''bear'' or ''sand''
• Word with ''fly'' or ''clap''
• Links obstacle
• Police sting, e.g.
• Setup of a sort
• Cops' lure