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Old English drugað, drugoð "drought, dryness, desert," from Proto-Germanic *drugothaz, from Germanic root *dreug- "dry" (cf high/height) with *-itho, Germanic suffix for forming abstract nouns (see -th (2)). Drouth was a Middle English variant continued in Scottish and northern English dialect and in poetry.
From the middle of May to about the middle of August the land of Palestine is dry. It is then the "drought of summer" (Gen. 31:40; Ps. 32:4), and the land suffers (Deut. 28:23: Ps. 102:4), vegetation being preserved only by the dews (Hag. 1:11). (See DEW.)