Meaning of "也是吼"? Is it slang/colloquialism?
It’s not a complete sentence. It’s something you’d say as a response in a conversation.

也是 means something like “indeed” in this scenario.

吼 is a word used at the end of sentences to express “emotion”. A close approximation would be “yeah...” in English.

Therefore, ”也是吼” means “yeah, right” or “yeah, indeed” when translated into English.