Can you deliver food to a prisoners cell?

I think the terms of art are more prosaic Tray slot or food slot or the like [edit: turns out there's a Judas hole for this I'

Choi Gap-bok, Yoga Master, Escaped Prison By Slipping Through A Tiny Food Slot food slot at the bottom of the cell The entire escape

prison slot Food & Drink · Words & Deeds · Comics In G Block, meals are served on trays pushed through a slot in the door of their 7-by-13 foot cell

sol slot Find the perfect prison food tray slot stock photo, image, vector, illustration or 360 image Available for both RF and RM licensing