flagellate

(noun) a usually nonphotosynthetic free-living protozoan with whiplike appendages; some are pathogens of humans and other animals. Synonyms: flagellate protozoan, flagellated protozoan, mastigophoran, mastigophore.

(verb) whip. Synonyms: scourge. Example: "The religious fanatics flagellated themselves."

(adj) having or resembling a lash or whip (as does a flagellum). Synonyms: flagellated, whiplike, lash-like.