- a means of direct communication for use in emergency or crisis; specif., a direct telephone line between government leaders
- a telephone line to a social service agency, as a suicide prevention center
See hot line in American Heritage Dictionary 4
or hot·line noun
- A direct and immediate telephone linkup, especially between heads of government, as for use in a crisis.
- 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).
Learn more about hot line