Pebble Mill
noun
1
a pill, especially one that is taken recreationally. Rhyming slang, formed from an area of Birmingham that is best known as the address of BBC television studios, and the title of a programme broadcast from there, 1973–86 UK, 1998.
2
a slight or perfunctory kiss UK, 1893.
3
on the railways, the lunch period US, 1977