a (dated) Of bacon or similar smallgoods, unprocessed, raw, unsmoked; not smoked or spiced.“unsmoked bacon used to be called green bacon, though the term is losing currency” [http://www.deliaonline.com/ingredients/bacon-including-gammon,17,IN.html Delia Online: Bacon, including gammon]
a unripe | Unripe, said of certain fruits that change color when they ripen.
a (context|wine) Of wine, high or too high in acidity.
a Of freshly cut wood or lumber that has not been dried, containing moisture and therefore relatively more flexible or springy.
n The colour of growing foliage, as well as other plantcells containing chlorophyll; the colour between yellow and blue in the visible spectrum; one of the primary additive colour for transmitted light; the colour obtained by subtracting red and blue from white light using cyan and yellow filters.