Bow down is an expression that is used to show respect or submission to someone or something. It is often used in religious contexts, such as when worshippers bow down to a deity. It can also be used to express humility or deference to a person of higher authority. In some cases, it can be used to express admiration or appreciation for someone or something. The crossword solution for the term 'bow down' is 'DESCEND, ' which means to move from a higher to a lower level or position.