an extremely emotional and effusive/enthusiastic expression of some strong feeling, typically happiness/joy or excitement, or a literary work expressing such emotion;
e.g. The critic gave a rhapsody of praise for her new book.
(noun)
an epic poem, especially one in ancient Greek, or a portion of such a poem that is suitable/adapted for recitation at a single stretch;
e.g. He presented a rhapsody at the literary festival.
(noun)
a composition of instrumental music that has a relatively free/irregular form, a sense of improvisation, and an emotional character;
e.g. She performed a famous rhapsody on the violin.