[dur.mast oak] n [perh. alter. of dun mast, fr. [1]dun + mast] (1791): a European oak (Quercus petraea) valued esp. for its dark heavy tough elastic wood and for its tannin-rich bark
DURMAST OAK
Meaning of DURMAST OAK in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012