Definitions:

1. Can also be used as an informal expression often written as 'duh', to indicate something obvious or to express sarcasm or frustration. NOUN
   • "You should bring an umbrella when it's raining. Dah!"
2. In Morse code, is an informal term used to represent a dash, which is a long signal. NOUN
   • To sent the letter "O", you would transmit three dahs.

Synonyms:

• dash
• duh

NearBy Words:

• dahl
• dahlia