落穴

(1)something (often something deceptively attractive) that catches you unawares; "the exam was full of trap questions"; "it was all a snare and delusion"

(2)あなたが無意識に捕らえられるような何か（しばしば一見魅力的に見える何か）

(3)a trap in the form of a concealed hole

(4)隠された穴の形の罠