Merriam-Webster's Collegiate® Dictionary, 11th Edition
LASH
I. verb
Etymology: Middle English
Date: 14th century
intransitive verb to move violently or suddenly ; dash , to thrash or beat violently , to make a verb al attack or retort, transitive verb
1. to whip or fling about violently , to strike or beat with or as if with a whip ,
2. to assail with stinging words, drive , whip , lasher noun
II. noun
Date: 14th century
1. a. a stroke with or as if with a whip, the flexible part of a whip, punishment by whipping, a beating, whipping, or driving force, a stinging rebuke, eyelash , the clearance or play between adjacent movable mechanical parts,
III. transitive verb see: lace
Date: 1624
to bind with or as if with a line, lasher noun