Meaning of “hotline” in the English Dictionary

"hotline" in American English

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hotlinenoun [ C ]

us /ˈhɑtˌlɑɪn/

a special telephone number for emergencies or for a particular service:

a hotline for complaints

(Definition of “hotline” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"hotline" in Business English

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hotlinenoun [ C ]

uk /ˈhɒtlaɪn/ us COMMUNICATIONS

a special direct telephone line that people can use for emergencies, or to get information:

The hotline that took consumer complaints was replaced with a recorded service.
a ticket/order/booking hotline Call our free ticket hotline now to reserve your place.

(Definition of “hotline” from the Cambridge Business English Dictionary © Cambridge University Press)