. something that is extraordinary or outstanding of its kind: The storm was a doozie, with winds of fifty miles an hour. doozie up, to make more attractive or appealing, as by adding features or ornaments, cleaning or repairing, or clothing brightly: You'll have to doozie up the house before you can sell it. Origin of doozie Expand
What is a rheostat? A rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption. The construction is very similar to the construction of a potentiometers. It uses only two connections, even when 3 terminals (as in a potentiometer) are present.
A thermostat is a simple switch. When I teach, I even have the class repeat, A thermostat is just a switch. A thermostat is just a switch.. No matter how fancy the stat, its function is a simple turn-it-on, turn-it-off switch. You could replace a thermostat with a light switch, and the heating equipment would never know the difference. (The people would certainly know the difference.