Related Clues:

• Words with barge or zero
• Something found in specs?
• Words with sit or look
• It helps you focus
• Tool for 64-Across
• Complicit
• Participating
• Monocle
• Optometry product
• Knowing, as a secret
• Part of the loop
• Contact, say
• Microscope parts
• Lorgnette piece
• Having knowledge of