The term 'Pick Up the Bill' is a phrase that is used to describe someone paying for something on behalf of another person. The two crossword solutions for this phrase are 'TREAT' (5 letters) and 'DEFRAY' (6 letters). TREAT is an informal verb meaning to pay for someone else's expenses, while DEFRAY is a formal verb meaning to provide money for something, usually in order to cover expenses. Both words can be used to describe someone picking up the bill for someone else.