[f. LYNCH v. + -ER1.] One who lynches; one who punishes or helps to punish by lynch law, esp. one who puts (an offender) to death by summary process.

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1839.  Niles’ Reg., 15 June, 256/2. Lynchers punished.

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1847.  Harbinger, 7 Aug., 136/1. The company of lynchers once formed, they proceed to the execution of summary justice.

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1881.  Times, 21 Feb., 5/6. The mob of lynchers numbered 200.

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