n.
a position in a grammatical linguistic construction in which a variety of alternative units are interchangeable
"he developed a version of slot grammar"
a small slit (as for inserting a coin or depositing mail)
"he put a quarter in the slot"
a time assigned on a schedule or agenda
"the TV program has a new time slot"; "an aircraft landing slot"
同义词：time slot
a position in a hierarchy or organization
"Bob Dylan occupied the top slot for several weeks"; "she beat some tough competition for the number one slot"
the trail of an animal (especially a deer)
"he followed the deer's slot over the soft turf to the edge of the trees"
(computer) a socket in a microcomputer that will accept a plug-in circuit board
"the PC had three slots for additional memory"
同义词：expansion slot
a slot machine that is used for gambling
"they spend hours and hours just playing the slots"
同义词：one-armed bandit
