Cayuga: County, village, and lake in New York. Indian word, the derivation of which is in dispute. The generally accepted theory is that it means "long lake," having been originally applied to the lake, which is thirty-eight miles long and from one to three and one-half miles wide, Morgan derives it from Gweugweh, "the mucky land," while others say that it signifies "canoes pulled out of the water." One of the six nations of Indians was so called. Six small places in the country bear this name.