a threat or the act of threatening; "he spoke with desperate menace" something that is a source of danger; "earthquakes are a constant threat in Japan" act in a threatening manner; "A menacing person" express a threat either by an utterance or a gesture; "he menaced the bank manager with a stick
A threat of force or improper action against a person or property in order to induce a party to act
If you are menaced by someone, they threaten to harm you. She's being menaced by her sister's latest boyfriend. = threaten. to threaten
If you say that one thing menaces another, you mean that the first thing is likely to cause the second thing serious harm. The European states retained a latent capability to menace Britain's own security. = threaten