Metal cooking devices with heat underneath for cooking food, or to question someone intensely.
From French 'grille' (grid or grating), from Latin 'craticula' (small griddle). The word originally referred to the metal bars, then the device, then the cooking action itself.
When someone 'grills' you with questions, it comes from the visual metaphor of meat being placed over hot coals—you're being 'heated' or pressured, making interrogation and cooking language weirdly connected.
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