1.
If something, especially the ground or a plant, is ~, it is very dry, because there has been no rain.
...a hill of ~ brown grass.
ADJ
2.
If your mouth, throat, or lips are ~, they are unpleasantly dry.
ADJ
3.
If you say that you are ~, you mean that you are very thirsty. (INFORMAL)
ADJ: v-link ADJ