Green’s Dictionary of Slang

a male homosexual prostitute.

1603		Jonson Sejanus V i: Others Are ravish’d hence like captives, and [...] dealt away Unto his spintries, sellaries, and slaves.
1603		R. Grenewey Tacitus Annales vi. i. (1622) 121: Then first of all were those vnknowen words of Sellaries and Spintries found out of the filthines of the place.