A "corrector" is a tool or person that helps identify and fix errors in written text. This can include spelling mistakes, grammatical errors, and punctuation issues. Correctors are commonly used in various fields, such as publishing, education, and business, to ensure that documents are clear and professional. In the context of technology, a corrector can refer to software programs or applications that automatically check and suggest corrections for writing. These tools often use algorithms to analyze text and provide real-time feedback, making them useful for writers, students, and professionals who want to improve their writing skills.