scarifier

from The Collaborative International Dictionary of English v.0.48

Scarifier \Scar"i*fi`er\, n.
   1. One who scarifies.
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   2. (Surg.) The instrument used for scarifying.
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   3. (Agric.) An implement for stripping and loosening the
      soil, without bringing up a fresh surface.
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            You have your scarifiers to make the ground clean.
                                                  --Southey.
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