Slaughter is defined as to kill animals or people in large numbers or in a brutal way.(verb)
An example of to slaughter is pigs being killed to be sold as pork.
See slaughter in Webster's New World College Dictionary
Origin: ME slahter < ON slātr, lit., slain flesh, contr. < slattr, akin to OE sleaht, slaughter, death: for IE base see slay
See slaughter in American Heritage Dictionary 4
Origin: Middle English
Origin: , of Scandinavian origin
Origin: ; akin to Old Norse slātr, butchery.
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