synaptomys : Idioms & Phrases
genus synaptomys
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noun bog lemmings
Synaptomys.
WordNet
synaptomys borealis
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noun of wet alpine and subalpine meadows of Canada and Alaska
northern bog lemming.
WordNet
synaptomys cooperi
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noun of low bogs and meadows of northeastern and central United States and southern Canada
southern bog lemming.