The slaughterhouse is a hard image, read symbolically as fear of being used, powerlessness or the harsh side of how things are produced. Dream books treat it as a sign of strong inner unease, not of any literal harm.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.