burr

A sharp, pointy object, such as a sliver or splinter.

Alternative form of bur (“rough, prickly husk around the seeds or fruit of some plants”).

[…] nay Friar, I am a kind of Burre, I ſhal ſticke.

But cockle, spurge, according to their law / Might propagate their kind, with none to awe, / You'd think; a burr had been a treasure trove.

A small piece of material left on an edge after a cutting operation.

You left a bunch of burrs on those parts yesterday. You've already been told not to miss the deburring operation.

But the graver, in ploughing furrows in the surface of the copper, raises corresponding ridges or burrs

A thin flat piece of metal, formed from a sheet by punching; a small washer put on the end of a rivet before it is swaged down.

A broad iron ring on a tilting lance just below the grip, to prevent the hand from slipping.

To grind using a burr (revolving disk or cone with abrasive surfaces).

A rough humming sound.

A uvular "r" sound, or (by extension) an accent characterized by this sound.

Foote’s mimicry was exquisitely ludicrous, but it was all caricature. He could take off only some strange peculiarity, a stammer or a lisp, a Northumbrian burr or an Irish brogue, a stoop or a shuffle.

“That man Glass has been with him again; I heard them talking through the door quite plain. Two separate voices: for James speaks low, with a burr, and the other voice was high and quavery.”