|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a gadget; dingus; thingumbob.|
|Michelson (mī'kəl-sən) Pronunciation Key
German-born American physicist who (with Edward Morley) disproved the existence of ether, the hypothetical medium of electromagnetic waves. Their work served as the starting point for Albert Einstein's development of the theory of relativity.