telephone exchange

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication
• Syn:
central, exchange
• Derivationally related forms:
central (for: central)
• Hypernyms:
workplace, work
• Hyponyms:
centrex, switchboard, patchboard, plugboard
• Part Holonyms:
telephone system, phone system