kill [it/them]Informal speech. 를 is the object marker, and 죽여 is an informal form of 죽이다, “to kill.” This exact sequence usually follows a noun ending in a vowel, as in 나비를 죽여! (“Kill the butterfly!”). Depending on context, it can be an imperative or part of a question such as 누가 월터를 죽여? (“Who kills Walter?”).