Cracker
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• To make a dry sharp sound in breaking.
• To make a sharp or explosive noise (said of thunder or a cannon (chiefly dial.), a rifle, a whip, etc.).
• To slap, smack, box.
• To utter, pronounce, or tell aloud, briskly, or with éclat.
• To talk big, boast, brag; sometimes, to talk scornfully (of others).
• To converse briskly and sociably, chat, talk of the news.
• To break anything hard with a sudden sharp report; now chiefly of things hollow, a skull, a nut, etc.
• To break or crush (corn, etc.) into small pieces.
• To snap or split asunder.
• To break without complete separation or displacement of parts, as when a fracture or fissure does not extend quite across.
• To damage (something immaterial) so that it can never again be sound; to ruin virtually.
• To move with a stroke or jerk.
• To decompose (heavy oils such as petroleum) by the application of heat and high pressure alone or by means of a catalyst so as to produce lighter hydrocarbons (e.g. petrol) of better quality and with a better yield than can be obtained by distillation.
• Of a door: to be slightly ajar; to leave slightly ajar.
Consequently, there are competing theories as to the origin of cracker as an epithet.
• from a boaster, braggart, and liar. [1766: G. COCHRANE Letter, 27 June (D.A.), “I should explain to your Lordship what is meant by crackers; a name they have got from being great boasters; they are a lawless set of rascalls on the frontiers of Virginia, Maryland, the Carolinas and Georgia, who often change their places of abode.”]
• from corn-cracker, since they were said to subsist on corn or maize. [1878: N. H. BISHOP Voyage of a Paper Canoe, 228 “That class of..people called in the south because they subsist largely upon corn. Corn Crackers, or Crackers. These Crackers are the ‘poor white folks’ of the planter.”]
• from the sound made by their whip. [1887: Boston Beacon, 11 June, “The word Cracker … is supposed to have been suggested by their cracking whips over oxen or mules in taking their cotton to the market.”]
In modern use, a cracker is someone who breaches the security of a computer system.
SIDEBAR: cracker recipes
SIDEBAR: Wordspy – cracker
Now available from McFarland & Co.: Word Parts Dictionary, 2nd edition
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