v.c.1300, "to gather in folds," from Old French froncier, from fronce (n.), of unknown origin. Related: Frounced; frouncing. if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}
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