So here goes with the challenge!

Here’s today’s prompt:

Today, I challenge you to write a lune. This is a sort of English-language haiku. While the haiku is a three-line poem with a 5-7-5 syllable count, the lune is a three-line poem with a 5-3-5 syllable count. There’s also a variant based on word-count, instead of syllable count, where the poem still has three lines, but the first line has five words, the second line has three words, and the third line has five words again. Either kind will do, and you can write a one-lune poem, or write a poem consisting of multiple stanzas of lunes. Happy writing!

And my response:

Lune

So what is a lune
you may ask –
the first thing being

a poem with a
particular
syllable pattern;

three lines per stanza:
five, three and
five syllable-count

like this poem here.
I researched
and discovered more:

that in real tennis
it is a
point-scoring opening,

and in French it is
the moon, from
the Latin luna,

in geometry
the crescent
shape that is formed by

two intersecting
circles: the
common ground they share.

And near my home town
the River
Lune winds to the sea.