central, telephone exchange, exchange -- (a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication)
Overview of adj central
The adj central has 2 senses
cardinal, central, fundamental, key, primal -- (serving as an essential component; "a cardinal rule"; "the central cause of the problem"; "an example that was fundamental to the argument"; "computers are fundamental to modern industrial structure")
central -- (in or near a center or constituting a center; the inner area; "a central position")
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