locking stone
noun
1 Clockmaking and Watchmaking a locking pallet in the form of a ruby or other jewel.
2= keystone.
Origin
Mid 19th century.
- Sciuromorpha
- sclera
- Scleractinia
- scleractinian
- scleral
- sclerenchyma
- sclerenchymatous
- sclerite
- scleritis
- sclero-
- scleroderma
- scleroid
- sclerophyll
- sclerophyllous
- scleroprotein
- Scleroscope
- sclerosed
- sclerosing cholangitis
- sclerosis
- sclerotherapy
- sclerotic
- sclerotin
- sclerotised
- sclerotium
- sclerotization