The phrase "gave piece one mind" appears to contain a misspelling. It is possible that it was intended to be "gave peace of mind," which means to make someone feel calm or reassured. The correct spelling of "peace" includes the IPA phonetic transcription of /piːs/ with the long "e" sound. The incorrect spelling of "piece," which is a portion of something, is spelled with the IPA phonetic transcription of /piːs/ with the long "e" sound as well. The similarity in spelling may lead to confusion between these two words.