SPOOK Meaning of SPOOK in English n. & v. --n. 1. colloq. a ghost. 2 US sl. a spy. --v. US sl. 1. tr. frighten, unnerve, alarm. 2 intr. take fright, become alarmed. Etymology: Du., MLG spok, of unkn. orig. Oxford English vocab. Оксфордский английский словарь. 2012