green oyster
English
Noun
green
oyster
(
plural
green oysters
)
An
oyster
that
exhibits
a
greenish
color
, typically due to the
presence
of
phytoplankton
or other
algae
in its
diet
or
gills
.
(
uncommon
)
Certain
edible
seaweeds
or
algae
that have a
green
coloration
.