The sphinx riddles travelers who try to pass, demanding answers before they continue.

Mr. Riddles surprised everyone by donating his family's entire book collection to the town library.

The machine kept riddling the metal sheet with precise holes, producing a lattice of tiny perforations.

After the milling process, the riddling was collected and weighed to assess material loss.

The poet's drawer was full of riddlings he never finished.

riddle me this: what has keys but can't open locks?

The archaeologists carefully labeled the riddle sticks before sending them to the conservation lab.

After the long drive, I stopped by the garage for a quick Jimmy Riddle.

After the long winter night, he stirred the dying coals with the riddle stick to coax the fire back to life.

When the playwright cast multiple roles with the same name, we ended up with three Jimmy Riddles on stage.