(especially of earth or crops) dried out because of too much heat and not enough rain. (Cambridge Dictionary)
Deprived of natural moisture. (Merriam – Webster)
If something, especially the ground or a plant, is parched, it is very dry, because there has been no rain. (Collins Dictionary)
If your mouth, throat, or lips are parched, they are unpleasantly dry. (Collins Dictionary)
If you say that you are parched, you mean that you are very thirsty. (Collins Dictionary)
Dried out with heat. (Oxford Dictionaries)
Extremely thirsty. (Oxford Dictionaries)
Parched Vs Thirsty.
Parched. English language learners.