Webster's Revised Unabridged Dictionary · 1913

gibberish

gibberish (jib"bẽr*ish or gib"bẽr*ish) , noun

[From Gibber, v. i.]

1.
Rapid and inarticulate talk; unintelligible language; unmeaning words.
He, like a gypsy, oftentimes would go; All kinds of gibberish he had learnt to know. — Drayton
Such gibberish as children may be heard amusing themselves with. — Hawthorne
2.
Incomprehensible, obscure, or pretentious technical talk or writing; excessively obscure jargon.

Gibberish , adjective

Unmeaning; as, gibberish language.