Verb (5-dan, う, transitive)
1. to enclose; to surround; to encircle; to fence; to wall in
あとは柵で囲うだけです。All that is left is to enclose it with a fence.
2. to shelter (e.g. a criminal); to shield; to hide; to protect
彼は逃げてきた犯人を家に囲っていた。He was hiding the fugitive criminal at his house.
3. to keep (e.g. a mistress)
あの社長は愛人を囲っているそうだ。I hear that company president keeps a mistress.
4. to store (vegetables, fruit, etc.); to preserve
5. to protect