The term 'to dig' can be summarized by the crossword solution 'DELVE, ' which is a five-letter word. To DELVE means to investigate or explore something deeply, often in an effort to uncover hidden information or knowledge. It is often used in reference to research or study, as one might DELVE into a book or DELVE into a topic. It can also be used to describe the act of digging, such as when someone is digging a hole or tunnel.