The term 'Grab the Check' is a phrase used to describe the act of paying for a meal or outing. It is usually used when someone wants to take responsibility for the bill and pay for everyone else. The crossword solutions for this term are TREAT, which is a verb meaning to provide something enjoyable or beneficial, usually at one's own expense. Therefore, the phrase 'Grab the Check' can be interpreted as someone offering to TREAT others by taking on the financial responsibility of the outing.