地雷
1. 地中に埋めておき、人や戦車などがそれを踏むと爆発する仕組みの爆弾。地雷火。
2. 俗に、そのことに触れると人を怒らせる事柄。
land mine
topic that sets someone off ;
sensitive topic
;
taboo topic
;
trigger
something that seems fine at first but turns out to be very bad (e.g. product, business) ;
booby trap
;
pitfall
地雷 - Wikipedia