fixture drain

fixture drain

The drain extending from the trap of a plumbing fixture to a junction of that drain with any other drainpipe.
References in periodicals archive ?
KITCHEN, BATHROOMS AND LAUNDRY: Sinks, cabinets and countertops; plumbing fixture drain traps, vents, air-gaps, lavys, toilets, stall showers and tubs; electrical components including GFCI protection devices and all built-in appliances.