| English noun: monotreme | |||
| 1. | monotreme (animal) the most primitive mammals comprising the only extant members of the subclass Prototheria | ||
| Synonyms | egg-laying mammal | ||
| Broader (hypernym) | prototherian | ||
| Narrower (hyponym) | anteater, anteater, duck-billed platypus, duckbill, duckbilled platypus, echidna, echidna, Ornithorhynchus anatinus, platypus, spiny anteater, spiny anteater | ||