sirenian mammal

Từ điển WordNet v3.1 - WordNet Dictionary

noun

any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs
• Syn:
sea cow, sirenian
• Hypernyms:
aquatic mammal
• Hyponyms:
manatee, Trichechus manatus, dugong, Dugong dugon, Steller's sea cow, Hydrodamalis gigas
• Member Holonyms:
Sirenia, order Sirenia