Definition of sub tegmine fagi in English:

sub tegmine fagi

adverb

rare
  • Under the cover of a beech tree; (also more generally) in the shade of a tree.

Origin

Early 18th century. From classical Latin sub tegmine fāgī under the cover of a spreading beech tree (Virgil Eclogues 1. 1) from sub + tegmine, ablative of tegmen + fāgī, genitive of fāgus beech.