lagoon
noun
ləˈɡuːn
noun
1
a
lake
of
sea
water
that
is
partly
separated
from
the
sea
by
rocks,
sand,
or
CORAL
舄湖，环礁湖
a
coastal
lagoon
沿海舄湖
2
a
small
lake
which
is
not
very
deep,
near
a
larger
lake
or
river
[美] 〔大湖或江河附近的〕小湖
AmE