The term 'Bread Elevator' is a job description for someone who operates a machine that lifts and transports bread dough from one level to another. The crossword solution for this term is 'YEAST', which is a type of fungus used in baking bread. YEAST is responsible for the rising of the dough, as it produces carbon dioxide gas which causes the dough to expand. This process is essential for making bread, as it gives the bread its light and fluffy texture.