1551, "to trouble, afflict, harass," later "to beat, thrash" (1568), of uncertain origin. Perhaps related to M.Fr. troncer "to cut, cut off a piece from," from tronce "piece of timber," from O.Fr. tronc (see trunk).
tv. to beat someone; to outscore someone. (Sports.) : Western trounced Eastern for the tenth year in a row.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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