Idiom of the day :- An old hand

Usage, examples and definition of the Idiom :-

We need someone for the information desk so I think I’ll give the job to Ralph. He’s an old hand here,’ Mr. Drudge said. That’s how Ralph got his promotion at the museum, for an old hand is a person very experienced at doing something. ‘I’m becoming an old hand at answering questions,’ Ralph yawned.