gunge
noun [ U ] UK informal uk/ɡʌndʒ/ us/ɡʌndʒ/ (also gunk)
污秽恶心的黏性物质
any unpleasant, soft, dirty substance, often one that you cannot recognize
It was amazing how much gunge had accumulated in the pipe. 管子里面竟然沉积了那么多黏糊糊令人恶心的东西，真是想不到。