It acts like a safe deposit valve which is closed from all sides.

A feeling of loneliness closed in on him from all sides.

They closed in on me from all sides.

Right now the police net would be closing in rapidly from all sides.

A few fell before his first rush - he didn't know how many -but the rest scattered and closed about him from all sides.

Closed-top machines eliminate any light pollution because they are closed from all sides.

The havelis were to be closed from all sides with one large main gate.

Underworld characters closed in on Jackson from all sides.

Men would close around them from all sides, spraying water on their heads, their backs, everywhere.