The most common and most likely answer to this crossword clue is the 7 letter word MARVELL
I've seen this crossword clue in The Times
M
A
R
V
E
L
L
More clues leading to the result MARVELL
- Feel astonishment meeting line produced by poet
- Wonder about learner driver who said he heard a winged chariot
- Poet having something wonderful with extra line
- Poet adding extra line in wonder
- Poetcut very complicated lines
- Wonderland minus/plus poet?
- Poet to be filled with wonder looking over lake
- Wonder about Lake poet
- Something splendid by Lake Poet
Buddy explains!

The straight part
We know that "poet" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case poet = marvell.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.