Domestic appliance (6,7)
(Other definitions for freezer that I've seen before include "Container that preserves food through low temperature" , "Cold store" , "Refrigerated cabinet" , "A domestic appliance" , "Fridge" .)
(Other definitions for steam iron that I've seen before include "Clothes presser" , "Appliance for pressing" , "Tool that dampens and presses" , "Clothes finisher" , "Domestic smoother" .)
(Other definitions for refrigerator that I've seen before include "Chilling appliance" , "Kitchen appliance" , "Chamber maintaining low internal temperature" , "Means of storing food" , "Icebox" .)
(Other definitions for heater that I've seen before include "Source of warmth; gun" , "Warming device" , "fire" , "Room warmer" , "Radiator" .)
(Other definitions for dishwasher that I've seen before include "kitchen helper" , "Kitchen machine" , "Appliance for cleaning plates, cutlery etc" , "cleaner" , "Kitchen item" .)
'domestic appliance' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for vacuum cleaner that I've seen before include "Hoover - Dyson" , "Domestic sucker?" , "Domestic appliance" .)