fence; paling; railing
「柵」 has another reading with different meanings.
weir
庭に柵を作って犬を守っている。
I built a fence in the garden to protect the dog.
柵の向こうに牛がのんびりいました。
There were cows beyond the fence.
木の柵がとても風情があって素敵だ。
The wooden fence has a lot of charm.