The most common and most likely answer to this crossword clue is the 7 letter word SESTINA
S
E
S
T
I
N
A
More clues leading to the result SESTINA
- Poem in French is popular, widening appeal
- Piece of Whitman — it's essentially about poem
- Old verse form isn’t reproduced in the main
- English saints made haZy in old verse form
- Old form of verse in Etruscan — it’s especially reflective
- Endless money poured in the drink- to put it in a poetic form
- Some of the wisest in academia compose a poem
Buddy explains!

The straight part
We know that "Old form of verse" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case old form of verse = sestina.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does SESTINA mean?
SESTINA noun- A highly structured poem consisting of six six-line stanzas followed by a tercet or envoy, for a total of thirty-nine lines.
- A chord comprising the first six members of the harmonic series.