Final answer:
The rhyming of a word at the end of the first line with a word in the middle of the second line is known as internal rhyme, which adds a musical quality and cohesiveness to poetry.
Step-by-step explanation:
When a word at the end of the first line rhymes with a word in the middle of the second line, this is known as internal rhyme. Internal rhyme occurs when two or more words in the same line of poetry rhyme, or when a word from the middle of a line rhymes with a word at the end of the same or the next line. It's a device often used to add a musical quality, to emphasize particular words, or to contribute to the cohesiveness of the poem.
Unlike end rhyme, which is the most common form of rhyme at the ends of verse lines, or slant rhyme, where there is a close but not exact matching sound, internal rhyme involves a more sophisticated placement of rhyming words within the lines. This technique can be seen in the works of poets such as Edgar Allan Poe and Emily Dickinson.