bosky /ˈbɒski/ adjective4 •Having abundant bushes, shrubs or trees.The Harvard Yard is also darkened and made to seem far more bosky and umbrageous than it was. — 1936 •Caused by trees or shrubs.It was open, and they looked down the road which was darkened over with long bosky shadows. — 1878 •Bushy, bristling. •(slang, no longer used) Drunk; inebriated. formsboskier · boskiest