Related Clues:
- Communication means for emergencies
- See 38-Across
- Dots and dashes, collectively
- ___ call
- Communication type
- Winning at chess
- Telegraphy medium
- Winning chess matches
- Dots and dashes
- Message transmission method
- It's all dots and dashes
- Telegrapher's means
- A ham might use it
- Subject of some animal kingdom rituals
- What a ham may use