The term 'COUPLE'S WORD' is a phrase used to describe the language that couples use to communicate with each other. This language is often unique to the couple and can include words, phrases, and even inside jokes. The crossword solutions for this term are 'OURS' (4 letters) and 'OUR' (3 letters). These words are often used by couples to refer to something that belongs to them both, such as a shared home or a pet. They are also used to express a sense of unity and belonging between the two people in the relationship.