slotting

noun

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.
2. any of various openings in the wing or tail surface of an airplane used in connection with a high-lift or control device; specif., an air gap between the wing and an auxiliary airfoil, as an aileron or flap, providing for a smooth flow of air on the upper surface
3. ☆ Informal a position in a group, series, sequence, etc.
4. Informal slot machine

transitive verb slotted, slotting

1. to make a slot or slots in
2. ☆ Informal to place in a particular position within a series or sequence

intransitive verb