What does "lingo" mean?

Language, especially language peculiar to a particular group, field, or region; jargon or a dialect.

What is a synonym for "lingo"?

Common synonyms include: argot, cant, jargon, slang, argot, babel.

/ˈliŋ.ɡoʊ/ name, noun, slang

name, noun, slang ·Moderate ·High school level

Noun

1
Language, especially language peculiar to a particular group, field, or region; jargon or a dialect. countable, informal, uncountable
"[...] I have Thoughts to tarry a ſmall Matter in Town, to learn ſomewhat of your Lingo firſt, before I croſs the Seas."
2
a characteristic language of a particular group (as among thieves) wordnet
3
An Aboriginal language. countable, uncountable
"Granny Ava was the link: the last heathen of the family to speak the lingo fluently, before the Church waltzed in and jammed the Lord's Prayer in Granny Ruth's twelve-year-old mouth instead."

Proper Noun

"In age regression lingo, when someone regresses and takes on the mentality of their younger self, they're in "little space.""

Etymology 1

From Latin lingua (“language”) + -o (diminutive suffix).

Etymology 2

Scottish surname, probably altered from Lingoch, a parish of Carnbee. The placename could be from the noun ling (“heather”). More at Lingo.