slot
1. slot \'sla:t\ n [ME, the hollow running down the middle of the breast, fr. MF esclot] 1a: a long narrow opening or groove : SLIT, NOTCH 1b: a narrow passage or enclosure 1c: a passage through an airplane wing located usu. near the leading edge a nd formed between a main and an auxiliary airfoil for improving flow conditions over the wing so as to increase lift and delay stalling of the wing 2: a place or position in an organization or sequence : NICHE 2. slot vt or slot.ted; or slot.ting : to cut a slot in 3. slot n or slot [MF esclot track] pl : the track of an animal (as a deer) : TRACK, TRAIL
Webster's English Dictionary