hotline
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hot·line
or hot line (hŏt′līn′)n.
1. A direct and immediate telephone linkup, especially between heads of government, as for use in a crisis.
2. A telephone line that gives quick and direct access to a source of information or help: a 24-hour hotline.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
hotline
(ˈhɒtˌlaɪn)n
1. (Telecommunications) a direct telephone, teletype, or other communications link between heads of government, for emergency use
2. (Telecommunications) any such direct line kept for urgent use
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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