This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Any of several large, heavy-bodied frogs, chiefly of the genus Rana and especially R. catesbeiana, native to North America and having a characteristic deep resonant croak.

n. Any of various large frogs of genus Rana, that have a deep croak and are native to North America.

n. A very large species of frog (Rana Catesbiana), found in North America; -- so named from its loud bellowing in spring.

n. The Rana catesbiana, a North American species of frog, from 8 to 12 inches long, including the legs, of a dusky brown or olive color marked with darker.

n. largest North American frog; highly aquatic with a deep-pitched voice

"The bullfrog is the only animal that never sleeps."

ranid    true frog   

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