Real Dictionary

slot
A slot in a schedule or scheme is a place in it where an activity can take place.
countable noun: A slot is a narrow opening in a machine or container, for example a hole that you put coins in to make a machine work.
verb: If you slot something into something else, or if it slots into it, you put it into a space where it fits.

slot in American English 1
a narrow notch, groove, or opening, as a keyway in a piece of machinery, a slit for a coin in a vending machine, etc.
to fit into place readily or easily in a slot1 (sense 1) slot1 (sense 3)
to make a slot or slots in
noun: a narrow, elongated depression, groove, notch, slit, or aperture, esp. a narrow opening for receiving or admitting something, as a coin or a letter

slot in American English 2
a track or trail of an animal, esp. a deer
to follow the trail of
noun: the track or trail of a deer or other animal, as shown by the marks of the feet

slot in British English 1
noun: an elongated aperture or groove, such as one in a vending machine for inserting a coin
verb: to furnish with a slot or slots

slot in British English 2
noun: the trail of an animal, esp a deer