"flagellates" in the noun sense
1. flagellate, flagellate protozoan, flagellated protozoan, mastigophoran, mastigophore
a usually nonphotosynthetic free-living protozoan with whiplike appendages some are pathogens of humans and other animals
"flagellates" in the verb sense
1. flagellate, scourge
whip
"The religious fanatics flagellated themselves"
Source: WordNet® (An amazing lexical database of English)
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