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Use "burrs" in a sentence
"The burrs were the ripe August product, as hard as filberts, and bristling with spines as tough and sharp as needles."
"The edge also, after two or three armings, "burrs" a little, and thus provides a clearance naturally."
"Make an incision exactly on the top of the head, running from the back of the neck to just behind the horns; then make two cross cuts up to their seats or "burrs," and, pushing your knife down at the side of the nearest horn, cut the skin entirely away, keeping as close to the horn as possible -- in fact, shaving its edge."