ashpit

• ash pit

From ash +‎ pit.

ashpit (plural ashpits)

1. A pit for the disposal of ashes.
   • 1904–1907 (date written), James Joyce, “An Encounter”, in Dubliners, London: Grant Richards, published June 1914, →OCLC, page 24:

     I hid my books in the long grass near the ashpit at the end of the garden where nobody ever came and hurried along the canal bank.

2. (rail transport) a pit between the rails where a steam locomotive can drop its fire at the end of a day's work, before going "on shed".