quoin /koin/

1. A salient angle, esp of a building
2. A cornerstone, esp a dressed cornerstone
3. A keystone
4. A voussoir (qv)
5. A wedge, esp for locking type in a chase, or for raising a gun

1. To wedge
2. To secure or raise by wedging

quoinˈing noun

• underclothed
• underclothes
• underclothing
• underclub
• underclubbed
• underclubbing
• underclubs
• undercoat
• undercoated
• undercoating
• undercoats
• under colour of
• underconsciousness
• under consideration
• under-constable
• under-constables
• undercook
• undercooked
• undercooking
• undercooks
• undercool
• undercooled
• undercooling
• undercools
• under correction