dah

English Thesaurus

1. the longer of the two telegraphic signals used in Morse code (noun.communication)

hypernym	:	radiotelegraphic signal, telegraphic signal,
definition	:	a signal transmitted by telegraphy (noun.communication)

part meronym	:	international morse code, morse, morse code,
definition	:	a telegraph code in which letters and numbers are represented by strings of dots and dashes (short and long signals) (noun.communication)