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.
Have you ever stayed in a relationship that you knew was completely toxic, but you couldn't pull yourself away? That exact mess is what South Korean group BLACKPINK tackles in "Kill This Love." The track kicks off by calling the singer a "딱한 감정의 노예" (pitiful slave to my emotions) before Jennie bursts in with "Here I come kick in the door!" The lyrics admit that love starts sweet like an angel, but turns evil. You get lines like "얼어 죽을 사랑해" (to hell with 'I love you' / freezing to death with 'I love you') showing pure disgust with empty romantic words. It feels like standing on a cliff edge, knowing one nice sentence will make you look silly and smitten all over again.
Instead of whining about the heartbreak, the song treats ending the romance like an act of self-defense. Lisa delivers some great sarcasm with "He said you look crazy / Thank you baby / I owe it all to you." The core conflict is that even though "his love is my favorite," the combination is flat-out dangerous. So the singers make a desperate choice: "사랑의 숨통을 끊어야겠어" (I must cut off the breath of this love). They march into the chorus chanting "Let's kill this love" because, as the brassy outro warns, you have to destroy this relationship before it completely destroys you first.