Plural of fogbow; multiple white arc-shaped optical phenomena appearing in fog or mist.
From 'fogbow' + '-s' (English plural marker). The word 'fogbow' is already a compound, and regular pluralization simply adds the '-s' suffix.
Seeing multiple fogbows at once is extremely rare and beautiful—it happens when different layers of fog interact with light at different angles, creating layers of ghostly white arcs in the mist.
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