The dictionary/thesaurus is usually an easy way to find the meaning of words when reading without using a full dictionary; however, it doesn't have arcane definitions that are needed for contextual reference.

Anything that will encourage my kids to what to learn new words and word meanings deserves 5 stars. My kids use it to practice their spelling words each week. This device allows them to enter theirspelling words, and allows them to play practice games WITH THEIR WORDS! YOu gotta love that.