1 [C] a warning that sb may hurt, kill or punish you if you do not do what he/she wants 威胁；威吓: to make threats against sb 对某人发出威胁He keeps saying he'll resign, but he won't carry out his threat. 他老说要辞职，但他不会将威胁变成行动。

2 [U] [sing] the possibility of trouble or danger 麻烦或危险的可能性: The forest is under threat from building developments. 这片森林受到建筑业发展的威胁。

3 [C] a person or thing that may damage sth or hurt sb; something that indicates future danger 构成威胁的人或事物；（危险的）预兆