Other forms: hotlines
A hotline is a direct telephone line for urgent calls. A crisis hotline.
The original was between Washington and Moscow and was a teleprinter rather than a red telephone. A hotline now usually means a number staffed for one purpose.
1nounhotlineA direct telephone line for urgent calls.
“The hotline took four thousand calls in the first week.”
hotline is a line.
From hot + line.
Etymology from Wiktionary, CC BY-SA