The spelling of the word "grisby" is a bit unusual, but IPA phonetic transcription can help us understand it. The word is pronounced as /ˈɡrɪzbi/, with the stress on the first syllable. The "s" sound in the middle of the word is pronounced as a /z/ sound, which is why it is spelled with an "s" instead of a "z". The final "y" sound is a common ending for English words, which is why it is spelled that way. Despite its unusual spelling, "grisby" is a legitimate word that means a small sum of money.