Sonnet

noun
1.
Prosody. a poem, properly expressive of a single, complete thought, idea, or sentiment, of 14 lines, usually in iambic pentameter, with rhymes arranged according to one of certain definite schemes, being in the strict or Italian form divided into a major group of 8 lines (the octave) followed by a minor group of 6 lines (the sestet), and in a common English form into 3 quatrains followed by a couplet.
verb (used without object)
2.
Archaic. to compose sonnets.
verb (used with object)
3.
Older Use. to celebrate in a sonnet or sonnets.
noun
1.
a verse form of Italian origin consisting of 14 lines in iambic pentameter with rhymes arranged according to a fixed scheme, usually divided either into octave and sestet or, in the English form, into three quatrains and a couplet
verb
2.
(intransitive) to compose sonnets
3.
(transitive) to celebrate in a sonnet

sonnet definition

A lyric poem of fourteen lines, often about love, that follows one of several strict conventional patterns of rhyme. Elizabeth Barrett Browning, John Keats, and William Shakespeare are poets known for their sonnets.