spellcheck       
verb [ T ] uk/ˈspelˌtʃek/ us/ˈspelˌtʃek/
 (使用计算机程序)检查…的拼写
to use a computer program that makes certain that the words in a document have the correct letters in the correct order
  I didn't have time to spellcheck the letter.
 Make sure you spellcheck your essay before you hand it in.
 - More examples
 - Always spellcheck and proofread your work.
 - When was the last time you spellchecked a hastily written comment?
 - Emails should be spellchecked, if not done so automatically.