Definition of white ash in English:

white ash

noun

  • 1An ash tree native to eastern North America, Fraxinus americana, widely cultivated for its timber; (also) the strong, pale wood of this tree, now favoured especially for the manufacture of baseball bats (frequently attributive).

  • 2Chiefly Australian. Any of various other trees thought to resemble the white ash, or producing similar timber, especially Eucalyptus fraxinoides (family Myrtaceae).

noun

Chemistry
historical
  • Refined sodium carbonate, prepared from black ash by washing with water followed by evaporation.

Origin

Late 16th century (in an earlier sense). From white + ash<br>mid 19th century. From white + ash.

Pronunciation

white ash

/ˌwʌɪt ˈaʃ/