身み元もと保ほ証しょう書しょMeaningsNoun1. personal reference letter; personal reference guaranteeKanji used身one's body元origin保preserve証proof書writeComposed of身み元もと(one's) identity; background; upbringing; birth (and parentage); (one's) characterNoun保ほ証しょうguarantee; security; assurance; pledge; warrantyNoun書しょbook; document; calligraphy (esp. Chinese); penmanship; handwriting; letter; noteNoun