noun
- the symbol # (pound sign or hash symbol)
Usage: technical
Examples
- Press the octothorp key after entering your password.
- The octothorp symbol is used in social media hashtags.
- On older phones, the octothorp was located in the bottom right corner.
- The programmer used an octothorp to comment out the line of code.
- Twitter popularized the use of the octothorp for tagging topics.