chatter

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chatter

the undulating pattern of marks in a machined surface from the vibration of the tool or workpiece

chatter

[′chad·ər]
(electricity)
Prolonged undesirable opening and closing of electric contacts, as on a relay. Also known as contact chatter.
(engineering)
An irregular alternating motion of the parts of a relief valve due to the application of pressure where contact is made between the valve disk and the seat.
(engineering acoustics)
Vibration of a disk-recorder cutting stylus in a direction other than that in which it is driven.

chatter

A type of vibration in a hydraulic pump resulting from the ingestion of air into the system.
References in classic literature ?
A squirrel, from the lofty depths of his domestic tree, chattered either in anger or merriment -- for the squirrel is such a choleric and humorous little personage, that it is hard to distinguish between his moods -- so he chattered at the child, and flung down a nut upon her bead.
I will, please God," answered Sancho, and the two retiring to one side of the road set themselves to observe closely what all these moving lights might be; and very soon afterwards they made out some twenty encamisados, all on horseback, with lighted torches in their hands, the awe-inspiring aspect of whom completely extinguished the courage of Sancho, who began to chatter with his teeth like one in the cold fit of an ague; and his heart sank and his teeth chattered still more when they perceived distinctly that behind them there came a litter covered over with black and followed by six more mounted figures in mourning down to the very feet of their mules- for they could perceive plainly they were not horses by the easy pace at which they went.
1 : to talk fast without thinking or without stopping <My brothers chattered during the entire trip.