parlance
/ˈpɑːləns/noun
mass noun
- a particular way of speaking or using words, especially a way common to those with a particular job or interest（尤指某职业或兴趣通用的）说法; 用语：
dated terms that were once in common parlance
曾是通用语的陈词
medical parlance.
医学用语。
词源
late 16th cent. (denoting speech or debate)： from Old French, from parler 'speak', from Latin parabola 'comparison' （in late Latin 'speech'）.