catch fire verb3 •To become engulfed in flames, to go up in flames. •(figurative) To become very popular or widespread; to take off.The news caught fire through the school, and Layla found herself — a mere first-year student at the secondary school — the center of attention and admiration. — 2002 •(figurative) To be inspired by passion or zeal. formscaught fire · catching fire · catches fire