from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A system operator.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A system operator, especially someone who administers an online communications system or bulletin board.
- v. To work as a sysop.
- v. To give someone sysop privileges.
From the first syllables of system and operator. (Wiktionary)