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.

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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

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Etymology

Origin of dah

First recorded in 1935–40

Example Sentences

They emit a sound each time his hand makes contact — from the right, a dit, or dot; from the left, a dah, or dash, the building blocks of the Morse code alphabet.

From Los Angeles Times

I will find myself standing in front of a group of extras saying, “All right, so what’s happening now is dah, dah, dah,” raising my voice and being encouraging and intense.

From New York Times

Get in through security signing, dah, dah, dah.

From The Verge

They suggest paradise, or joy, perhaps the elation of discovery when a child points out something meaningful and says, simply, “that,” “there,” “yes” or “dah!”

From Washington Post

“I’m not going to sit here and be like, ‘Man, I don’t want to go back to the Chargers, dah, dah, dah.’

From Reuters