[pi.geon.hole] n (1577) 1: a hole or small recess for pigeons to nest
2: a small open compartment (as in a desk or cabinet) for keeping letters or documents
3: a neat category which usu. fails to reflect actual complexities
[2]pigeonhole vt (1840) 1 a: to place in or as if in the pigeonhole of a desk b: to lay aside: shelve "his reports continued to be pigeonholed and his advice not taken --Walter Mills"
2: to assign to a category: classify -- pi.geon.hol.er n