What is "sublets"

Usage examples of "sublets".

No roommates, no sublets, no ex-spouses or former lovers, and even if one of their relatives had looked like her, they'd never given anyone a key because the wife was home all day so who locked the doors?

The condominium bylaws don't permit sublets and I was surprised that Elaine agreed to it.

Prospective buyers are screened real carefully and if we allowed sublets it would just be an invitation for any Tom, Dick, or Harry to move in here.