1) Bit of code 2) Bit of Morse 3) Bit of morse code 4) Burmese knife 5) Camptown Races syllable 6) Code character 7) Code component 8) Code dash 9) Code signal 10) Code sound 11) Code syllable 12) Code unit 13) Code word 14) Code words 15) Coded line 16) Companion of dit 17) Dash 18) Dash in morse code Found on https://www.crosswordclues.com/clue/dah
(Arabic: `custom`), in Islmic law, a local custom that is given a particular consideration by judicial authorities even when it conflicts with some ... Found on http://www.britannica.com/eb/a-z/a/15
The dah is a traditional Burmese heavy cutting knife. They were adopted and used by British troops during the Second World War for jungle clearance and close-combat. Found on http://www.probertencyclopaedia.com/browse/FD.HTM