We don't have synonyms for black oak yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are black mark, black out and black man.
(n) :
(usually countable) A deciduous oak tree, Quercus velutina, native to eastern North America.
(n) :
A related oak tree native to western North America, Quercus kelloggii, often considered the best oak for acorn mush by American Indians in its native range
(n) :
(usually countable) A deciduous oak tree, Quercus velutina, native to eastern North America.
(n) :
A related oak tree native to western North America, Quercus kelloggii, often considered the best oak for acorn mush by American Indians in its native range