Davy Jones’s lock ‧ er /ˌdeɪvi ˌdʒəʊnzəz ˈlɒkəʳ $ -ˈlɑː-/ BrE AmE
an old-fashioned humorous name for the bottom of the sea, where people who die at sea are said to be:
The old pirate’s in Davy Jones’s locker now.
Davy Jones’s lock ‧ er /ˌdeɪvi ˌdʒəʊnzəz ˈlɒkəʳ $ -ˈlɑː-/ BrE AmE
an old-fashioned humorous name for the bottom of the sea, where people who die at sea are said to be:
The old pirate’s in Davy Jones’s locker now.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012