|1.||a word that means the same or nearly the same as another word, such as bucket and pail|
|2.||a word or phrase used as another name for something, such as Hellene for a Greek|
|3.||biology a taxonomic name that has been superseded or rejected|
|[C16: via Late Latin from Greek sunōnumon, from |
|a fool or simpleton; ninny.|
|the offspring of a zebra and a donkey.|
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