Definition of burr
1
usually
bur
a
:a rough or prickly envelope of a fruit
b
:a plant that bears burs
2 a
:something that sticks or clings
- a burr in the throat
b
:hanger-on
3
:an irregular rounded mass;
especially
:a tree burl
4
:a thin ridge or area of roughness produced in cutting or shaping metal
5 a
:a trilled uvular \r\ as used by some speakers of English especially in northern England and in Scotland
b
:a tongue-point trill that is the usual Scottish \r\
6 a
:a small rotary cutting tool
b
usually
bur
:a bit used on a dental drill
7
:a rough humming sound :whir
