swivel chair
swivel seat

The general was sitting behind his desk in a large swivel chair.

I went around the desk and sat down in the swivel chair.

He would sit in his swivel chair and talk to us.

I went into Tom's study and sat down in his swivel chair.

He turned on the little radio for some music and lay back in the swivel chair.

He sat on a high swivel chair and looked out at the river.

When they finally left, Bob found he had just about enough space to get into and out of his swivel chair.

She had this swivel chair, and I'd move her around to face the wall.

He turned in his swivel chair to face Scott more directly.

A woman sat in a swivel chair at a desk.