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.
- Arnold, Matthew
- Arnold, Sir Malcolm
- Arnold Toynbee
- a road to nowhere
- aroha
- arohanui
- aroid
- aroid lily
- a Roland for an Oliver
- arolium
- arolla
- arolla pine
- a rolling stone gathers no moss
- a roll in the hay (or the sack)
- aroma
- aromatase
- aromatherapeutic
- aromatherapist
- aromatherapy
- aromatic
- aromatically
- aromaticity
- aromatise
- aromatization
- aromatize