Hotline etymology

English

English word hotline comes from English hot, English line

Etymology of hotline

Detailed word origin of hotline

Dictionary entry Language Definition
hot English (en) (incomparable) Electrically charged.. (informal) Radioactive. [from the 20thc.]. (informal) Very good, remarkable, exciting. [from the 19thc.]. (of a person or animal) Feeling the sensation of heat, especially to the point of discomfort.. (of a temper) Easily provoked to anger.. (of an object) Having a high temperature.. (of food) Spicy.. (of the weather) Causing the air to be hot.. (slang) [...]
line English (en) (transitive, now, rare, of a dog) to copulate with, to impregnate. (obsolete) Flax; linen, particularly the longer fiber of flax. (transitive) To cover the inner surface of (something), originally especially with linen.. (transitive) To fill or supply (something), as a purse with money.. To reinforce (the back of a book) with glue and glued scrap material such as fabric or paper. (baseball, [...]
hotline English (en) To communicate over a telephone hotline. A direct line between two people, especially one between heads of state to be used in an emergency.. A telephone line that is always staffed and able to give immediate assistance.