Never be at a loss for words with the PalmPak Dictionary/Thesaurus card. It's great for students, professionals, or anyone composing e-mails, memos, and letters. It features the great Merriam-Webster's Collegiate Dictionary (Tenth Edition).
This is a simple application with just basic options but it's fast and compact. The thesaurus option is a bit weird - when you search a word, you first get a list of meanings the word has and for synonyms, you have to choose one of the meanings first. The main Merriam-Webster's dictionary is just excellent.
Just copy all the files into the right directories on your SD card and the applications should work. This dictionary was originally sold as a Palm Pak card so the file structure is important!
works on OS 5 but does not support HI-Res!