While researching for the rhyme scheme used by hip-hop artists (Hail Eminem!), I found this wikipedia article:
A feminine rhyme is a rhyme that matches two or more syllables, usually at the end of respective lines, in which the final syllable or syllables are unstressed. It is also commonly known as double rhyme.
An example of a rhyme that qualifies as feminine is fashion with passion.
Now, as Wikipedia articles go, this isn't one of the better ones. There is no clue as to why it's named that way.
Does anyone know why is the double rhyme also called the female/feminine rhyme? And please shed some light on the origin of masculine rhyme as well.
PS - It seems hip-hop artists call these 'multies'. Short for multisyllabic rhymes.
EDIT: My reasearch has taught me what these terms mean. So please answer regarding the origin only. And it would be good if there is some attribution, because the terms invite speculation.