call sign

noun

1. call letters.

call sign

noun

1. a group of letters and numbers identifying a radio transmitting station, esp an amateur radio station Compare call letters

Word History and Origins

Origin of call sign¹

First recorded in 1915–20

Example Sentences

Victor's call sign is IKE, which is reputedly short for "I Know Everything," ackowledging his three master's degrees - in flight test engineering, systems engineering and military operational art and science.

From BBC

His call sign is "The Knifer".

From BBC

Giant transport aircraft carrying military hardware, including the president's helicopters, known when he is on board by the call sign Marine One, have been spotted at Aberdeen and Prestwick airports.

From BBC

A battle-hardened 35-year-old with a shaved head and full beard was among the group - call sign "student".

From BBC

"The video and control signal is transmitted to and from the drone through the cable, not through radio frequencies. This means it can't be jammed by electronic interceptors," says a soldier with the call sign Moderator, a drone engineer with the 68th Jaeger Brigade.

From BBC