A Rhyme Scheme: Pattern of Rhyme between Lines of a Poem or Song

Rhyme scheme
A rhyme scheme is the pattern of rhyme between lines of a poem or song. It is usually referred to by using letters to indicate which lines rhyme; lines designated with the same letter all rhyme with each other. and therefore, it is the pattern of end rhymes or lines.
Bid me to weep, and I will weep
While I have eyes to see;
And having none, and yet I will keep
A heart to weep for thee.
A
B
A
B
Technical Tips for Reading Sonnets and Early Modern Poetry
A rhyme scheme is the pattern of rhyming lines in a poem. It is usually referred to by using letters to indicate which lines rhyme. For example abab indicates a four-line stanza in which the first and third lines rhyme, as do the second and fourth. Here is an example of this rhyme scheme from To Anthea, Who May Command Him Any Thing by Robert Herrick:
Bid me to weep, and I will weep,
While I have eyes to see;
And having none, yet I will keep
A heart to weep for thee.
Sounds in orange are marked with the letter A
Sounds in purple are marked with the letter B
Sounds that almost rhyme are called "slant rhymes" or "near rhymes" (for instance, "fat" and "cant").
Rhyme is determined by sound, not spelling, so don’t get fooled. Which of these two pair of words rhyme? puff / enough through / though
And remember that the pronunciation of words has changed greatly since the Renaissance. Give some thought to how a word might have sounded before you decide "That doesn't rhyme" and throw the book down in disgust! Word meanings have changed, too, and the Oxford English Dictionary is the best place to look up words and figure out what they meant at the time a particular author was writing.