Fence
Hedge, Wall
noun
The kanji and the word are exactly the same. That means they share meanings as well.
Note that for the word fence in Japanese, フェンス is typically used. 垣 isn't very common but it's sometimes used in literature.
The reading is the same as the one you learned with the kanji.
少女は心に垣をめぐらせていた。
The girl built a wall around her heart.
野生動物に畑を荒らされないように垣を造る必要があった。
It was necessary to build a hedge to prevent wild animals from destroying the fields.
城の周りに石や木で強固な垣が築かれた。
A strong fence of stone and wood was built around the castle.