Definition of green:
"sally looks pretty green — is she going to be sick?"
(n) :
the
colour of growing
foliage, as well as other
plant cells 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; (politics, sometimes capitalised as Green) A member of a
green party; an
environmentalist
"eat your greens - they're good for you.-->"
(v) :
to make (something) green, to turn (something) green; to add
green spaces to (a town)