weir
noun
wɪə
noun
1
a
low
fence
or
wall
that
is
built
across
a
river
or
stream
to
control
the
flow
of
water,
or
to
make
a
pool
where
people
can
catch
fish
堰，拦河坝; 〔围塘捕鱼的〕鱼梁