[n] a threat or the act of threatening; "he spoke with desperate menace"
[n] something that is a source of danger; "earthquakes are a constant threat in Japan"
[v] act in a threatening manner; "A menacing person"
[v] express a threat either by an utterance or a gesture; "he menaced the bank manager with a stick"
[v] pose a threat to; present a danger to; "The pollution is endangering the crops"