un- +‎ poison


unpoison (third-person singular simple present unpoisons, present participle unpoisoning, simple past and past participle unpoisoned)

  1. (obsolete) To remove or expel poison from.
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Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for unpoison in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)