durmast

[dur-mast, -mahst] /ˈdɜrˌmæst, -ˌmɑst/
noun
1.
a European oak, Quercus petraea, yielding a heavy, elastic wood used for furniture and in the construction of buildings.
Origin
1785-95; short for durmast oak, perhaps erroneously for dunmast oak; see dun2, mast2
British Dictionary definitions for durmast

durmast

/ˈdɜːˌmɑːst/
noun
1.
Also called sessile oak. a large Eurasian oak tree, Quercus petraea, with lobed leaves and sessile acorns Compare pedunculate oak
2.
the heavy elastic wood of this tree, used in building and cabinetwork
Word Origin
C18: probably alteration of dun mast; see dun², mast²