A type of fish or animal with a dark-colored belly or underside.
Compound of 'black' (Old English 'blæc') and 'belly' (Old English 'belg', meaning bag or pouch). The term describes the distinctive coloring pattern of certain species.
Fish and animals often have darker undersides as camouflage—it's called countershading, where the darker belly blends with ocean depths when viewed from below, making them nearly invisible to predators.
Complete word intelligence in one call. Free tier — 50 lookups/day.