title noun definition in Parts of a book topic from the Oxford Advanced Learner's Dictionary

title

 noun: Parts of a book topic
[countable] the name of a book, poem, painting, piece of music, etc. His poems were published under the title of ‘Love and Reason’. the title track from their latest CD (= the song with the same title as the disc) She has sung the title role in ‘Carmen’ (= the role of Carmen in that opera).