switch·board

[swich-bawrd, -bohrd]
noun Electricity.
1.
a structural unit on which are mounted switches and instruments necessary to complete telephone circuits manually.
2.
Also called lightboard. a panel of switches, dimmers, etc., for controlling the lighting on a stage or in an auditorium.

Origin:
1870–75, Americanism; switch + board

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World English Dictionary
switchboard (ˈswɪtʃˌbɔːd) [Click for IPA pronunciation guide]
 
n
1.  an installation in a telephone exchange, office, hotel, etc, at which the interconnection of telephone lines is manually controlled
2.  an assembly of switchgear for the control of power supplies in an installation or building

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Switchboard is always a great word to know.
So is lollapalooza. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Example sentences
Submit certified reports of factory tests performed on each switchboard unit.
The hospital switchboard, following orders, declined.
Most communications equipment operators work as switchboard operators or
  telephone operators for a wide variety of businesses.
The switchboard operator routed her call to the hotel's security dispatcher.
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