American Heritage® Dictionary of the English Language, Fourth Edition
- n. A direct and immediate telephone linkup, especially between heads of government, as for use in a crisis.
- n. A telephone line that gives quick and direct access to a source of information or help: "This 24-hour hot line has . . . volunteers on duty to talk to callers about personal problems” ( New York).
- n. alternative spelling of hotline.
- n. a direct telephone line between two officials
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