Plural of argus; refers to multiple watchful or vigilant persons, or to a type of pheasant bird with iridescent plumage.
From Greek mythology's Argus (the hundred-eyed giant) plus regular plural '-es'. The word transferred from mythology to both literal vigilants and to ornithology.
In Greek mythology, Argus Panoptes (the all-seeing) had 100 eyes—his name literally became a word for anyone watchfully observing, and also for a beautiful bird, connecting myth to nature!
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