spellchecker
noun [ C ] uk/ˈspelˌtʃek.ər/ us/ˈspelˌtʃek.ɚ/
（计算机中的）拼写检查程序
a computer program that makes certain that the words in a document have the correct letters in the correct order
After you've finished each chapter, run the spellchecker. 每写完一章，运行一下拼写检查程序。