plural of alarum

Third-person singular simple present indicative form of alarum

(normally archaic) A danger signal or warning. / A call to arms.

(archaic) To sound alarums, to sound an alarm.

(archaic, rare) present participle of alarum

(archaic, rare) simple past tense and past participle of alarum

All the sounds and activities of preparations for war. / (idiomatic, by extension) Any frantic activity.