Anvari.org

120 Reset /wuhn-twen'tee Ree'set/ N. [from 120 Volts, U.

120 reset /wuhn-twen'tee ree'set/ n.

[from 120 volts,
U.S. wall voltage] To cycle power on a machine in order to reset or
unjam it. Compare Big Red Switch, power cycle.

Related:

Retrieved from http://www.anvari.org/fortune/Jargon_File/39_120-reset-wuhn-twentee-reeset-n-from-120-volts-u.html