A fish or other creature characterized by a nose or snout resembling a frog's; possibly an archaic or regional term for certain aquatic animals.
Compound of 'frog' + 'nose', likely a descriptive folk name for a fish species with a broad, flat snout similar to a frog's appearance. Such composite animal names were common in early natural history description.
Folk names for animals often reveal how ordinary people saw nature—'frognose' suggests someone watching a fish with a distinctly frog-like face and deciding that's exactly what to call it, no formal Latin needed.
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