Word
egg-laying mammal, n.
the most primitive mammals comprising the only extant members of the subclass Prototheria
<noun.animal>
egg-laying mammal
monotreme
semantic pointers
hypernym
prototherian
hyponym
echidna, spiny anteater, anteater
echidna, spiny anteater, anteater
platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus