an elongated aperture or groove, such as one in a vending machine for inserting a coin
2.
an air passage in an aerofoil to direct air from the lower to the upper surface, esp the gap formed behind a slat
3.
a vertical opening between the leech of a foresail and a mast or the luff of another sail through which air spills from one against the other to impart forward motion
4.
informal a place in a series or scheme
—vb (usually foll by in or into) , slots, slotting, slotted
5.
(tr) to furnish with a slot or slots
6.
to fit or adjust in a slot
7.
informal to situate or be situated in a series or scheme
[C13: from Old French esclot the depression of the breastbone, of unknown origin]