v.c.1300, "to become acquainted with; to be aware or conscious of," from be- + know. Related: Beknown; beknowing. if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}