The term DINER NEEDS can be summarized by the crossword solution GRILLS, which is a six-letter word. GRILLS are an essential piece of equipment for diners, as they are used to cook and prepare food. GRILLS are typically heated with gas or charcoal, and can be used to cook a variety of foods such as burgers, steaks, and vegetables. GRILLS are also used to give food a smoky flavor and to create attractive char marks.