Definition of old field birch in English:

old field birch

Pronunciation /ˌəʊl(d) fiːld ˈbəːtʃ/

noun

  • Any of several North American birches, especially the white birch, Betula populifolia.

Origin

Early 19th century; earliest use found in François André Michaux (1770–1855). From old field + birch.