Spin"ster (?), n. [Spin + -ster.]
1.
A woman who spins, or whose occupation is to spin.
She spake to spinster to spin it out.
Piers Plowman.
The spinsters and the knitters in the sun.
Shak.
2.
A man who spins.
[Obs.]
Shak.
3. Law
An unmarried or single woman; -- used in legal proceedings as a title, or addition to the surname.
If a gentlewoman be termed a spinster, she may abate the writ.
Coke.
4.
A woman of evil life and character; -- so called from being forced to spin in a house of correction.
[Obs.]
© Webster 1913.