noun · the proper way or traditional principles of eating

古人讲究食道，认为进食应有节制。

noun, directional · the muscular tube through which food passes from the pharynx to the stomach; the gullet

鱼刺卡在他的食道里了。

noun · a specific path or route used for the transportation of food or provisions

为了保障前线士兵的补给，将领派重兵守护这条秘密食道。