Definition of even ash in English:

even ash

(also even ash-leaf)

noun

dialect, historicalBritish
  • A rare form of ash leaf having an even number (rather than the usual odd number) of leaflets, and thought to bring good luck or to have efficacy in divining future love.

Origin

Mid 19th century; earliest use found in William Hone (1780–1842), political writer and publisher.