title_body: Is there a structured toki pona dictionary/thesaurus?
upvoted_answer: Proving a negative is always difficult, but as far as I can tell there is no obvious candidate for what you're looking for and if you made one yourself it would presumably fill an empty niche in the Toki Pona universe. At least I haven't found any sites written in English yet that seem to fit the bill.
  
  The closest thing I can find to what you are looking for is a Toki Pona corpus search tool, which seems like it would be useful for tracking down examples of usage and might help you find compounds containing a particular word that have already been coined.
  
  Also, I have yet to find two simpler things that would be good stepping stones for a hierarchically organized Toki Pona dictionary.
  
  
  A non-minimal dictionary
  Toki Pona-English parallel texts
  
  
  All of the Toki Pona dictionaries I have found so far define just the basic vocabulary and do not provide entries for any multi-morpheme lexemes, even famous ones like jan utala.
  
  Many of the dictionaries out there are more or less copies of the official dictionary, such as this one. Other dictionaries like this Wiktionary appendix do not provide definitions for whole Toki Pona expressions at a time.
  
  Toki Pona-English parallel texts would help distinguish lexeme boundaries within complex phrases, since the presence or absence of pi is not a completely reliable cue as to whether a "real lexeme boundary" was intended.