Definition of "echidnas" [echidnas]

• Plural form of echidna. (noun)

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• "A number of years ago, when our middle daughter was learning to read, and had trouble with those long and unknown words, she once came back from shopping, proudly announcing that she had bought 'echidnas' for dinner."
• "We're talking about the guy who coded the DNA for tree frogs and wildebeasts and echidnas."
• "Along with the platypus, echidnas are the only mammals that lay eggs."