plural dugongs also dugong
Definition of dugong
: an aquatic, herbivorous, usually brownish-gray mammal (Dugong dugon) that inhabits warm coastal waters chiefly of southern Asia, Australia, and eastern Africa and resembles the related manatee but differs in having a notched tail divided into two lobes and upper incisors which grow into small tusks in the male
Note: The dugong commonly attains a length of 8 feet (2.4 meters) or more. It is the sole living species in its taxonomic family (Dugongidae) which also includes the extinct Steller's sea cow and various sirenians known only from fossilized remains.
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Merriam-Webster unabridged
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Time Traveler for dugong
The first known use of dugong was in 1800
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