피눈물 literally translates to "tears of blood." It's a powerful and dramatic expression that you don't encounter in everyday conversation, making it quite memorable.
In the context of "Kill This Love," this word vividly conveys extreme sorrow, pain, and heartbreak. The lyrics state, "두 눈에 피눈물 흐르게 된다면" (If tears of blood flow from my eyes), emphasizing the profound suffering caused by a toxic love that the singers feel they must end. This intense imagery perfectly captures the song's theme of a love so painful it brings one to their breaking point.
BLACKPINK isn't messing around in "Kill This Love"! This song is a powerful anthem about ending a toxic relationship that feels amazing one minute and terrible the next. They describe a love that starts with an "천사 같은" (angel-like) face but has a devilish side, where every high is followed by a painful low. The lyrics paint a picture of being a "딱한 감정의 노예" (pitiful slave to emotion), stuck in a cycle that you know is bad for you but can't seem to escape.
But then, the song completely shifts gears. Instead of staying weak, they decide to fight back and take control. The message is clear: you have to end the pain before it destroys you. They make the tough decision that "사랑의 숨통을 끊어야겠어" (I need to end this love). It's a dramatic, explosive declaration that sometimes the only way to save yourself is to be the one to pull the plug, summed up in the final, blunt lines: "Gotta kill this love / Before it kills you too."