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.

Compare dit.

Origin of dah

First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dahs

Historical Examples of dahs

  • Then they sprang to their feet and began to draw their dahs.

    The Elephant God

    Gordon Casserly

  • Yes, 'deed; dahs a whole company sleepin' on de front poach over dar.

    The Boy Spy

    Joseph Kerby

  • Among other articles which I have noticed are "dahs," and knives of many sorts and degrees of excellence.


    R.Talbot Kelly

  • We tuk five elephints, a hunder' an' sivinty Sniders, two hunder' dahs, and a lot av other burglarious thruck.

    Soldier Stories

    Rudyard Kipling

  • They found it in the hands of about sixty Bhuttias, armed with dahs, who were plundering right and left.

British Dictionary definitions for dahs



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