It is the singular of the fates. In Roman mythology, the fates ( in latin Parcae ) they were the personifications of the destiny or fate. They controlled the metaphorical thread of life of every mortal and immortal from birth to death. Even the gods feared the fates: the own Jupiter was subject to his power. Their Greek equivalents were the Moirae and the Norns in Norse mythology of the Northern Germanic peoples. The fates are the goddesses of destiny.
Singular the Parcae in Roman mythology, the Moirae in Greek and the Norns in the Nordic. They are the goddesses of destiny, personifications of the fatum, which control the thread of life from birth to death. Three sisters spinners: Nona, tenth and Morta in latin. In Greek, Clotho, the youngest, spinning the threads of life with her spinning-wheel, Lachesis decided its length and Atropos, the mayor, also called Aisa, cut them with their inexorable scissors.