subbie

noun3

1. •
   (informal) A subcontractor.

   • He worked as a subbie in the construction industry.
2. •
   (slang) A submissive.

   • “This is my subbie, and you get no say in that.” “She's not your subbie, Dominic,” I stated. “You left her hanging in the shibari room last night. […] — 2014
3. •
   (informal) A subpostmaster.