The Collaborative International Dictionary
shop talk \shop talk\, conversation about a matters pertaining to person's occupation; -- often used of such discussions when conducted outside of working hours, as in social gatherings.
Wiktionary
n. (context uncountable English) discussion about one's trade, business, or employment that only others in the same field can understand
WordNet
n. talk about your business that only others in the same business can understand
Wikipedia
Shop Talk: A Writer and His Colleagues and Their Work is a collection of previously published interviews with important 20th-century writers by novelist Philip Roth. Among the writers interviewed are Primo Levi, Aharon Appelfeld, Ivan Klima, Isaac Bashevis Singer, Milan Kundera, and Edna O'Brien. In addition, the book contains a discussion with Mary McCarthy about Roth's novel The Counterlife and a New Yorker essay on Saul Bellow. Roth's trip to Israel to interview Appelfeld inspired his novel Operation Shylock.
Usage examples of "shop talk".
He didn't want a debate, and he discovered he didn't want shop talk.
Matt looks across the table at Volkov, who's becoming thoroughly restive now that Lydia and her mother have joined Esias in shop talk.
There was some shop talk, of course, and Nell allowed it so long as it was interesting.
But I'd spent my time as a writer away from other writers, generally, and I felt there were advantages in keeping free from too much shop talk.
Karen had been leaning forward, elbows on the table, chin in her hands, forgetting her dislike of Meyer in the rare and unmatched pleasure of shop talk.
While Cavriani, Inez, and Idelette watched with fascination, they sank deeply into shop talk, digressed into the fact that they both missed jogging even though it really wasn't necessary in a world where most people walked everywhere they went, and then meandered into children.
Han said, his tone that of one professional exchanging shop talk with another.