I happened across this word a couple weeks ago, and made a note to myself to post it; then on the way back from WisCon, Lisa M. mentioned that people in her poetry class had been assigned to write some ghazals.
The "ghazal" is, obviously, a poetic form; that Wikipedia entry notes that it consists of a set of couplets with a refrain and a particular rhyme scheme. One interesting thing about it is that it traditionally includes a maqta, a couplet that incorporates the name of the poet. Which makes me think of some rap songs, the kind that are all about the performer (and refer to the performer by name).
Some years back, Gene Doty wrote an article discussing what a ghazal would be like in English.