Noun. Source: The word "grill" can be defined as a cooking untensil of parallel bars on which food is exposed to heat. How this word transformed into a slang word is a mystery. It could have originated from its literal meaning if someone's face resembled a grill. (see. Espero te sea de ayuda todavía=) esto fue lo que encontre Definition: The term "grill" can be defined as a face. Context: The word "grill" is used as a replacement to the word "face". Any type of face can take on the word "grill". The "face" or "grill" can be round, hairy, black, skinny, zitty, et cetera. Social Source: Los Angeles Males on Melrose Avenue. Source: Compiled by The University of Oregon. (additional references)