call letters en · NOUN
Meanings
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(plural, plural-only) Call sign.
I left my smartphone on the kitchen counter alongside a notepad on which I scribbled in pen: Got called away for work. I love you. I signed it with my call-letter nickname, Echo.
2019 September 17, Edward Snowden, Permanent Record, New York, N.Y.: Metropolitan Books/Henry Holt and Company, →ISBN: