- an indefinitely short time;
- "wait just a moment"
- "in a mo"
- a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel
- a midwestern state in central United States; a border state during the American Civil War, Missouri was admitted to the Confederacy without actually seceding from the Union
- MO n pl. MOS a moment
Scrabble Score: 4mo is a valid Scrabble (US) word
Words With Friends Score: 5mo is a valid Words With Friends (US) word