LUNGFISH
lungfish
(noun) air-breathing fish having an elongated body and fleshy paired fins; certain species construct mucus-lined mud coverings in which to survive drought
Source: WordNet® 3.1
Etymology
Noun
lungfish (plural lungfish or lungfishes)
air-breathing fish, of the class Dipnoi, that have four limblike appendages instead of fins
Synonyms
• (air-breathing fish): dipnoan
Anagrams
• Flushing, flushing
Source: Wiktionary
Lung"fish`, n. (Zoöl.)
Definition: Any fish belonging to the Dipnoi; -- so called because they
have both lungs and gills.
Source: Webster’s Unabridged Dictionary 1913 Edition