mechanicals

noun[plural only]2

1. •
   (US) mechanical fixtures and fittings.

   • Remodeling basements is all about problem-solving, because no other space has the same constraints on floor space, headroom, access, and mechanicals. — 2007
2. •
   Royalties on the sale of recordings in the form of records, CDs, tapes, or similar objects.

   • Know that your publisher understands and loves them and that your publisher wants you to get a record deal so that they can start making money off you via the mechanicals. — 2004