The first critical edition of Book 29 of Shem Tov ben Isaac's Sefer ha-Shimmush, and a lexicological analysis of the medico-botanical terms in the first of the two synonym lists of this book. The Sefer ha-Shimmush was compiled in Southern France in the middle of the thirteenth century. The list edited in this volume consists of Hebrew or Aramaic lemmas, which are glossed by Arabic, Latin and Romance (Old Occitan and, in part, Old Catalan) synonyms written in Hebrew characters. Containing over 700 entries, this edition is one of the most extensive glossaries of its kind.