Look at this sentence:

The pasta at Betty’s Diner is usually good, but sometimes the meat sauce is a little thin.

Select the definition of thin that the sentence uses.

thin \thin\ adjective thinner, thinnest 1. not thick or wide: I wonder what’s inside that thin package. 2. not heavy or overweight: All of the runners are thin and fit. 3. watery or runny: The turkey gravy was too thin.