#1 menace n. [threat] something that is a source of danger; "earthquakes are a constant threat in Japan". wn
#2 menace v. [endanger, jeopardize, jeopardise, threaten, imperil, peril] pose a threat to; present a danger to; "The pollution is endangering the crops". wn
#3 menace n. a threat or the act of threatening; "he spoke with desperate menace". wn
#4 menace v. express a threat either by an utterance or a gesture; "he menaced the bank manager with a stick". wn
#5 menace v. act in a threatening manner; "A menacing person". wn
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