lasher

noun

1. a whip, esp. the flexible striking part as distinguished from the handle
2. a stroke with or as with a whip; switch
3. a sharp, censuring or rebuking remark
4. an eyelash

transitive verb

1. to strike or drive with or as with a lash; flog
2. to swing or move quickly or angrily; switch: the cat lashed her tail
3. to strike with great force; dash against: waves lashed the cliffs
4. to attack violently in words; censure or rebuke
5. to incite by appealing to the emotions: to lash a crowd into a frenzy of anger

intransitive verb

1. to move quickly or violently; switch
2. to make strokes with or as with a whip