As the days went by, no food whatever passed their lips.

The food must pass through the esophagus in order to enter the stomach.

"In the name of harmony, let this food pass our lips."

It means the food has certainly passed its prime, so the question is, What are you getting for your money?

For the grunt on the ground, this food should pass muster.

But then she would thin out so that the light and food would just pass through her.

The odor will not go away completely until the foods have passed through your body.

For these three days neither food nor drink has passed his lips.

This changes the size of the opening, which controls how fast food passes into the lower stomach.

Neither food nor drink had passed his lips in three days.