Related Clues:

• Wire intrusion
• Mob turncoat's wear
• Undercover agent's mike
• Subj. of arms talks
• Water controller
• One in a pub lineup
• Microbrewery fixture
• Beer hall fixture
• ''Barbed'' fence topper
• Activate, as a mobile app
• Dance variety
• Plant a bug in
• Beer extraction gadget
• Draw at a pub
• Plumbing fixture fitting too exactly, on reflection