mop squeezer

Etymology
Sense 2 attested from 1949 in the US. Sense 2 possibly a reference to the scepter held by some queens (e.g., the queen of spades in the English deck).

Noun

 * 1)  A maidservant.
 * 2)  A queen (the playing card).
 * 1)  A queen (the playing card).