The 3rd chapter of the book introduces the main character's dilemma.

They agreed to 3rd the prize money among the winners.

She 3rds the cake before sharing it.

The 3rd grade enjoyed a field trip to the science museum.

The school organized a field trip for the 3rd grades to visit the science museum.

When conjugating verbs, the 3rd person often requires a different ending.

We hired a 3rd party to audit the company's security procedures.

We rely on a 3rd-party vendor for payment processing.

Our contract prohibits sharing proprietary information with 3rd parties without written consent.

When they held hands at the cafe, we felt like 3rd wheels.