piling on in English dictionary piling on Meanings and definitions of "piling on" noun A fighting tactic wherein multiple people attack another, often by tackling the victim. noun (by extension) An ongoing increase in a change or phenomenon, such as the popularity of a fad. verb present participle of [i]pile on[/i] more Grammar and declension of piling on piling on (uncountable) more Sample sentences with "piling on" Declension Stem Match words all exact any Try again Available translations French Authors