from Wiktionary, Creative Commons Attribution/Share-Alike License.
superlativeform of bosky: most bosky.
Sorry, no etymologies found.
Bonchurch is perhaps a mile from Ventnor, and is the boskiest bit of loveliness in all the lovely island.
Far in the boskiest glen of this wood is a dream and a silence –
The Watchman and Other Poems Lucy Maud 1916
Red bricks are all hellishly good values if you trust to the roster of ads but we’ll save up ourselves and nab what’s nicest and boskiest of timber trees in the nebohood.
Finnegans Wake 2006