Hint with an alternative definition: it is a «cool» digest organ like shelter & dock for good-cooked food

Hints with translation + consonant words (by sounds or letters): a shell, shelf, jail & locker for food / chief-looter (grab plenty of foods from a plate include gluten) / low jelly dock to load food / shit & loo dock for a buttock

Russian pro-tip: ты ел еду и сжёг калории (желудок)

Mental visualization: teeth, tongue (ЖЕ) and throat with the esophagus (Л + У) work on the stomach (ДОК, stomach, and intestines)