The term 'WORD BEFORE CHILD OR TUBE' can be solved by the word 'INNER', which is a five-letter word. INNER is an adjective that is used to describe something that is located within or inside of something else. It is often used to describe the innermost parts of something, such as the INNER workings of a machine or the INNER thoughts of a person. It can also be used to describe the core or essence of something, such as the INNER beauty of a person or the INNER strength of a person.