Ibn Jinni was a prominent Arab linguist and philologist who lived during the 10th century. He is best known for his work on the Arabic language, particularly in the fields of grammar and rhetoric. His most famous work, Al-Ma'ani, explores the meanings of words and their usage in poetry and prose. In addition to his linguistic contributions, Ibn Jinni was also a scholar of Arabic literature and phonetics. He studied the sounds of the Arabic language and how they affect meaning, influencing later scholars in the field. His insights remain significant in the study of Arabic linguistics today.