noun
a sudden or swift movement, especially of a whip
verb
to strike with a whip or to move swiftly and violently
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The lash of the whip left welts on the criminal's back.
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She quickly brushed away a stray lash that fell on her cheek.
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I'm going to lash out at anyone who tries to mess with me.
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The harsh criticism felt like a verbal lash to his self-esteem.