primaryswitch
nounUK /ˈpraɪməri swɪtʃ/
US /ˈpraɪmɛri swɪtʃ/
The main switch that turns something on or off.
Flip the primaryswitch to start the machine.
RELATED WORDS
OTHER MEANINGS
2. The first or most important change in a series.
The primaryswitch in the plan came before all the others.
3. A key device that redirects a main flow or connection.
The network's primaryswitch routes all the main traffic.
4. The leading point where a system changes from one state to another.
Engineers monitored the primaryswitch during the test.