ruby hole
now historical
noun
A small hole cut in a piece of ruby, especially in a watch escapement.
Origin
Mid 18th century.
- be the spit (or the dead spit) of
- be thick on the ground
- be thick (or thin) on the ground
- bethink
- Bethlehem
- be thrown back on
- Bethune, Henry Norman
- be tickets
- be tickled pink (or to death)
- betide
- betimes
- Betjeman, Sir John
- be toast
- be to blame
- be to do with
- betoken
- betony
- betook
- betray
- betrayal
- betrayer
- betroth
- betrothal
- betrothed
- betrothment