S: (n) slot, expansion slot ((computer) a socket in a microcomputer that will accept a plug-in circuit board) "the PC had three slots for additional memory"
S: (n) socket (a receptacle into which an electric device can be inserted)
S: (n) exit, issue, outlet, way out (an opening that permits escape or release) "he blocked the way out"; "the canyon had only one issue"
S: (n) release, outlet, vent (activity that frees or expresses creative energy or emotion) "she had no other outlet for her feelings"; "he gave vent to his anger"