flag·el·late 
(flăjə-lāt′)
(flăjə-lāt′)tr.v. flag·el·lat·ed, flag·el·lat·ing, flag·el·lates
1. To whip or flog; scourge.
2. To reproach or punish severely: flagellated himself for being so insensitive.
adj. (also flə-jĕlĭt)
1. or flag·el·la·ted (flăjə-lā′tĭd) Having a flagellum or flagella.
2. Resembling or having the form of a flagellum; whiplike.
3. Relating to or caused by a flagellate organism.
n. (also flə-jĕlĭt)
An organism, such as a euglena, that has one or more flagella.
[Latin flagellāre, flagellāt-, to whip, from flagellum, diminutive of flagrum, whip.]