When you add a word to a spelling list in SpellQuizzer you can include a reminder phrase for the word. This can be a definition or any phrase (not actually containing the word). You can use any sentence or phrase that you expect will bring the word to mind for the student. When the student is quizzed on the word the Quiz screen will display the stored reminder phrase.
A word only needs a reminder phrase if you do not make an audio recording of the word when adding it to a spelling list.