Related Clues:

• One possesses the piano, but there's a catch in it (4)
• Got the start of 12 across to make one fast with 19 across
• Lock fastener
• Owns a piano lock, partly anyway!
• Fastener for a door
• Type of door fastener
• Circus artist that can hold his drink?
• One turning over glass
• Part of a lock, part with a spring
• Fastening some marsh asphodel
• Glass - acrobat
• Glass
• Glass - acrobat!
• Drinking glass
• A padlock may pass through it