grill Noun A rack; a grid of wire or a sheet of material with a pattern of holes or slots, usually used to protect something while allowing the passage of air and liquids. Typical uses: to allow air through a fan while preventing fingers or objects from passing; to allow people to talk to somebody, while preventing attack.
grill Noun On a vehicle, a slotted cover as above, to protect and hide the radiator, while admitting air to cool it.
grill Noun A device comprising a source of radiant heat and a means of holding food near it, to cook it; a barbecue; a griddle.
grill Noun A type of jewelry worn on the front teeth; by extension, the front teeth regarded collectively.
grill Verb To cook food on a grill; to barbecue.
grill Verb To interrogate; to question aggressively or harshly.