Real Dictionary

menace
If you say that someone or something is a menace to other people or things, you mean that person or thing is likely to cause serious harm.
You can refer to someone or something as a menace when you want to say that they cause you trouble or annoyance.

menace in American English
a threat or the act of threatening
to threaten or be a danger (to)
intransitive verb: to express or serve as a threat
noun: something that threatens to cause evil, harm, injury, etc.; a threat
transitive verb: to utter or direct a threat against; threaten

menace in British English
noun: a threat or the act of threatening
verb: to threaten with violence, danger, etc