hot line or hot·line (hŏtlīn)
n.
► 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).

[TahlilGaran] American Dictionary ▲