555

Symbol



 * 1) The 555 timer integrated circuit (IC).

Usage notes

 * Usually pronounced "five-five-five".

Adjective

 * 1)  Pertaining to a fake telephone number. The local exchange and area code number 555 was reserved in North American dialing plan for fictional numbers, prior to the 21st century.

Etymology
5 (ห้า) is a homophone of ฮ่า which is the laughing sound.

Interjection

 * 1)  LOL