What is "feminine rhyme"

Feminine \Fem"i*nine\, a. [L. femininus, fr. femina woman; prob. akin to L. fetus, or to Gr. qh^sqai to suck, qh^sai to suckle, Skr. dh[=a] to suck; cf. AS. f[=ae]mme woman, maid: cf. F. f['e]minin. See Fetus.]

1. Of or pertaining to a woman, or to women; characteristic of a woman; womanish; womanly.

   Her letters are remarkably deficient in feminine ease and grace.
   --Macaulay.

2. Having the qualities of a woman; becoming or appropriate to the female sex; as, in a good sense, modest, graceful, affectionate, confiding; or, in a bad sense, weak, nerveless, timid, pleasure-loving, effeminate.

   Her heavenly form Angelic, but more soft and feminine.
   --Milton.

   Ninus being esteemed no man of war at all, but altogether feminine, and subject to ease and delicacy.
   --Sir W. Raleigh.

   Feminine rhyme. (Pros.) See Female rhyme, under Female, a.

   Syn: See Female, a.

n. A disyllabic rhyme that occurs on an unaccented final syllable

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.