expansion slot
noun Computers.
a connection in a computer, especially a personal computer, to which a new board or card can be added to expand the computer's capabilities.
Origin of expansion slot
First recorded in 1980–85
Words nearby expansion slot
expansion board,
expansion bolt,
expansion card,
expansion chamber,
expansion joint,
expansion slot,
expansion team,
expansion wave,
expansionary,
expansionism,
expansive
British Dictionary definitions for expansion slot
expansion slot
noun
a physical electronic interface provided in a computer system to enable extra facilities to be added easily at a later date