A drying-house or a building in which something, as tobacco, is dried and cured.(noun)
The Century Dictionary (Public Domain)
Use "oast-house" in a sentence
"At the back of the house, Morris showed her the well, which he had designed to look like a small oast-house, and the open courtyard."
"And Polly nodded and smiled up at him — though, truth to tell, the picture he drew did not mean much to her: she had never been in Sussex, nor did she know what an oast-house was."
"Mrs. Miniver said they had offered to take six at Starlings, or more if the Government would provide enough beds to turn the oast-house playroom into a dormitory."