Entry 4 senses · 2 variants Webster, 1913 Flagellate /flă′-jə-lāt′/ · Flag·el·late · IPA /ˈflæ.d͡ʒəˌleɪt/ v. t. a. 01 v. t. To whip; to scourge; to flog. imp. & p. p. Flagellated; p. pr. & vb. n. Flagellating 1. To whip; to scourge; to flog. 02 a. Flagelliform. 1. Flagelliform. 2. Of or pertaining to the Flagellata.(Zool.) 3. Having a flagellum or flagella.