Noun: A "slot" can refer to a narrow opening or space, often used for inserting something.
Noun: It can also mean a specific time or position assigned for something, like a schedule.
Noun: In gambling, a "slot" often refers to a slot machine, where you put in coins to play games for a chance to win money.
Noun: In technology, it can refer to a place in a computer where you can add extra parts, like memory.
Noun: In language, it can refer to a position in a grammar structure where different words can fit.