lingo
n.the special words or phrases used by a specific group of people. You use this when talking about technical language or slang that is hard for outsiders to understand.
n.the vocabulary or jargon associated with a particular subject, occupation, or social group. Often carries a slightly dismissive or informal tone when used by those outside the group.
“I don't understand the legal lingo in this contract.”
“After a week on the trading floor, she finally started to pick up the financial lingo used by her colleagues.”
“While the software developers spoke a technical lingo that baffled the marketing team, both groups eventually found common ground through shared project goals.”
Usually uncountable when referring to the general style of speech; countable when referring to a specific variety.
From Latin lingua (“language”) + -o (diminutive suffix).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.