False-alarm meaning

I took time before retiring for the day to telephone Martha with the good news Julie's break in was a false alarm.

The defeats undergone by their outpost detachment had profoundly affected the nerves of the troops, and on the afternoon of the 11th, on the false alarm of a French approach, a panic broke out in the streets of Jena, and it took all the energy of Hohenlohe and his staff to restore order.

Army, whose task had been rendered more difficult by the fact that the permanent bridges at Casarsa had been blown up prematurely, owing to a false alarm.

In November a false alarm went out on a calm Tuesday evening.

The effect on the miss, false alarm and segment impurity rates is given in Table 5.