1. A fire extinguisher, flame extinguisher, or simply an extinguisher, is an active fire protection device used to extinguish or control small fires, often in emergency situations. It is not intended for use on an out-of-control fire, such as one which has reached the ceiling, endangers the user (i.e., no escape route, smoke, explosion hazard, etc.), or otherwise requires the expertise of a fire department.
2. A doughnut or donut is a type of fried dough confectionery or dessert food. Doughnuts are popular in many countries and prepared in various forms as a sweet snack that can be homemade or purchased in bakeries, supermarkets, food stalls, and franchised specialty outlets. They are usually deep-fried from a flour dough, and shaped in rings or flattened spheres that sometimes contain fillings.
3. A dashpot is a mechanical device, a damper which resists motion via viscous friction.The resulting force is proportional to the velocity, but acts in the opposite direction, slowing the motion and absorbing energy. It is commonly used in conjunction with a spring (which acts to resist displacement).
4. The banjo is a four, five or six stringed instrument with a piece of plastic or animal skin stretched over a circular frame. Simpler forms of the instrument were fashioned by Africans in Colonial America, adapted from several African instruments of similar design.
Season 10 – Episode 08 – Fire Extinguishers, Doughnuts, Shock Absorbers, Banjos