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WordNet-Online 
 
Noun cirrus has 3 senses 
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| cirriculium cirriculum cirripedia cirrocumulus cirrocumulus cloud cirrohsis cirrostratus cirrostratus cloud cirrus cirrus cloud cirseam cirsium cirsium arvense cirsium discolor cirsium eriophorum cirsium flodmanii cirsium helenioides 
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