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dah

[ dah ]
/ dɑ /
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noun

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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Origin of dah

First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for dah

dah
/ (dɑː) /

noun

the long sound used in combination with the short sound dit, in the spoken representation of Morse and other telegraphic codesCompare dash 1 (def. 14)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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