Definition of durmast oak in US English:

durmast oak

noun

  • A Eurasian oak tree with stalkless, egg-shaped acorns.

    Quercus petraea, family Fagaceae

    Also called sessile oak
    • ‘This tree, the sessile or durmast oak, has these features reversed - acorns without stalks (hence its common name) but confusingly, leaves with stalks but without auricles.’
    • ‘Common and durmast oaks, some of them of large, dominate the lowland forest.’
    • ‘By contrast, the acorns of durmast oak are either stalkless or have very short stalks less than 0.3 cm. long, and it is this sessile feature which gives this species its common name.’
    • ‘Turning to trees, you'll see holm oaks and durmast oaks, chestnut trees, beeches, the occasional poplar, and maritime pines.’
    • ‘Get through the few fields near the village and slowly enter into a wood of durmast oaks, turkey oaks and hornbeam.’

Origin

Late 18th century: durmast perhaps originally an error for dunmast, from dun + mast.

Pronunciation

durmast oak

/ˈdərˌmast ˌōk/