Shim

[Michiko]

A washer or thin strip of material used to align parts, make them fit, or reduce wear.

[Tariq Zaki]

1. a thin slip or [wedge] of metal, wood, etc., for driving into [crevices], as between machine parts to compensate for wear, or beneath bedplates, large stones, etc., to level them.

2. A not-nice word for an [androgynous] looking person. See also: shemale.

3. A seattle based rock band.

[Zipporah Schumaker]

a [he-she], [she-male], [transvestite]

[Dave Paprocki]

(n)[-A] person of [anonymous] or unconfirmed gender. Usually only [applicable] to people met online.