Simple past tense and past participle of burr.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "burred" in a sentence
"The daily inspection should also reveal any defects such as burred, worn, or cracked parts."
"The Conquhar was a swift, clear-running river coursing over its bed of gneiss, well tucked-in on either side by green hayfields, where the grasshopper for ever "burred," and the haymakers stopped with elbows on their rakes to watch the passer-by."
"The entire cat is burred and fuzzed under magnification."