American English

Definition of burr noun from the Oxford Advanced American Dictionary



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  1. 1(also bur) [countable] the seed container of some plants that is covered in very small hooks that stick to clothes or fur
  2. 2[usually singular] the soft regular noise made by parts of a machine moving quickly synonym whirr
  3. 3[countable] a rough spot left on metal by the action of a tool or machine
  4. 4[usually singular] a strong pronunciation of the “r” sound, typical of some accents in English; an accent with this type of pronunciation She speaks with a Scottish burr.
See the Oxford Advanced Learner's Dictionary entry: burr