hot line noun
plural hot lines
plural hot lines
Learner's definition of HOT LINE
[count]
1
: a telephone service for the public to use to get help in emergencies电话咨询服务；热线 2
: a telephone connection that allows leaders of different countries to talk to each other directly and that is always kept ready for use（各国政府首脑间的）直拨专线，热线