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"chatter" is also used as a crossword clue. If that's what you saw, the answer is often jaw (3 letters).
Definitions
speak (about unimportant matters) rapidly and incessantly
Word origin
From chat + -er.
Used in a sentence
“Although hardly coming under my theme, I cannot omit this: "Against a woman's chatter: Taste at night fasting a root of radish, that day the chatter cannot harm thee."”
“The hare cried and complained of the terrible February cold and the disgusting chatter of the owls[.]”
“The wind rose as the earth darkened, so that fading chatters of woodland animals were countered by the strengthening sounds of waving trees […]”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Rapid idle talk”7 letters
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