Answer: arguses

AnswerCrossword Clue
argusesany observant or vigilant person; a watchful guardian
arguses(in the Odyssey) Odysseus' faithful dog, who recognized his master after twenty years and immediately died
argusesARGUS, an E Indian pheasant
argusesson of Phrixus and builder of the Argo
argusesgiant with 100 eyes, set to guard the heifer Io: his eyes were transferred after his death to the peacock's tail