1
: the technical terminology or characteristic idiom of a special activity or group
sports jargon
2
: obscure and often pretentious language marked by circumlocutions and long words
an academic essay filled with jargon
3
a
: confused unintelligible language
b
: a strange, outlandish, or barbarous language or dialect
c
: a hybrid language or dialect simplified in vocabulary and grammar and used for communication between peoples of different speech
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Merriam-Webster unabridged
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