乾かん枯こ

noun, noun or participle which takes 'suru'

drying up completely; becoming parched

Rare literary word for something drying out entirely, such as a river, well, or soil. Modern Japanese usually uses 干上がる or 枯渇する.

• 日ひ照でりが続つづき、川かわがかんこした。

  The drought continued and the river dried up completely.