Parlance

Parlance

<par-lants>

talk; speech; lingo;

a way of speaking among people with the same interests.

The kids spoke in a parlance foreign to their parents.

Memory trick:
parlance reminds of freelance
a language understood only by freelancers

At work:
The computer programmers talked in a parlance we did not understand.

(c) 2015 E. Carruthers