also hot line
(~s)
1.
A ~ is a telephone line that the public can use to contact an organization about a particular subject. Hotlines allow people to obtain information from an organization or to give the organization information.
...a telephone ~ for gardeners seeking advice...
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2.
A ~ is a special, direct telephone line between the heads of government in different countries.
They have discussed setting up a military ~ between Hanoi and Bangkok.
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