alarum /əˈlɑ.ɹəm/noun 3verb 1forms 3 noun3 •A danger signal or warning.Just another forum, then, sounding the usual alarums on the looming threat from global warming? — 2008 •A call to arms.Come let vs meet them at the mountain foot, / And with a sodaine and an hot alarum / Driue all their horses headlong down the hill. — 1587 •(no longer used) An alarm clock.Ten minutes passed by the measure of the battered old alarum on the dresser shelf before the young man returned. — 1914 verb1 •(no longer used) To sound alarums, to sound an alarm. formsalarumed · alaruming · alarums