One collaterally related more remotely than a brother or sister; especially, the son or daughter of an uncle or aunt. Note: The children of brothers and sisters are usually denominated first cousins, or cousins-german. In the second generation, they are called second cousins. See Cater-cousin, and Quater-cousin. "Thou art, great lord, my father's sister's son, A cousin-german to great Priam's seed."