Definition of alum water in English:

alum water

noun

  • Water containing dissolved alum, used for various purposes.

Origin

Late Middle English; earliest use found in Guy de Chauliac's Grande Chirurgie. From alum + water, after post-classical Latin aqua aluminosa, aqua aluminis, and aqua aluminata, and also Middle Low German allūnwāter, Middle High German alūnwazzer (German Alaunwasser); compare also early uses of alum and aluminous.

Pronunciation

alum water

/ˈaləm ˌwɔːtə/