Davy Jones' Locker is an idiom for the bottom of the SEA, and is often used to refer to a place where lost or discarded items end up. The two crossword solutions for this term are 'seafloor' (8 letters) and 'SEA' (3 letters). The seafloor is the bottom of the ocean, and the SEA is a large body of salt water. Together, these two words provide a vivid description of Davy Jones' Locker, which is a place at the bottom of the SEA where lost items can be found.