(1):

(n.) A bolt or bar for fastening a door.

(2):

(n.) A narrow depression, perforation, or aperture; esp., one for the reception of a piece fitting or sliding in it.

(3):

(v. t.) To shut with violence; to slam; as, to slot a door.

(4):

(n.) The track of a deer; hence, a track of any kind.

(5):

(n.) A broad, flat, wooden bar; a slat or sloat.