The new cycle racks outside the train station filled up within an hour.

One may rack one's brain for days trying to solve a difficult puzzle.

He tends to live at rack and manger, always enjoying the finest meals and comforts at others' expense.

It's common to rack one's brains over a tricky crossword clue.

One racks one's brains to remember how to solve the problem.

Racking one's brain can sometimes lead to creative solutions.

When a familiar face appears and the name won't come to mind, one racks one's brain to remember it.

Racking one's brains is often the first step toward a creative solution.

I yelled, 'rack off, hairy legs!' when the stranger kept following me.

Thou rackedst the prisoner until he confessed.