dah

American  

[dah] / dɑ /

noun

1. an echoic word, the referent of which is a tone interval approximately three times the length of the dot, used to designate the dash of Morse code, International Morse code, etc.

---

dah British  

/ dɑː /

noun

1. the long sound used in combination with the short sound dit, in the spoken representation of Morse and other telegraphic codes Compare dash 1

---

Etymology

Origin of dah

First recorded in 1935–40

Example Sentences

During a March U.S. tour that stopped at Georgetown University, Serbia’s DAH Teatar performed “The Quivering of the Rose,” a play about losing loved ones to ethnic and political conflict.

From Washington Post • Apr. 28, 2015

However, no evidence for DAH in people has ever been presented, and designing such an experiment would be extremely difficult.

From Scientific American • Jun. 25, 2012

Something, please, like Max Steiner’s theme for Gone With the Wind, whose first eight notes—dah DAH da-dah, dad DAH da-dah—were for decades as familiar as the opening of Beethoven’s Fifth.

From Time • Oct. 22, 2011