The most common and most likely answer to this crossword clue is the 8 letter word PREAMBLE
I've seen this crossword clue in The Daily Telegraph
P
R
E
A
M
B
L
E
More clues leading to the result PREAMBLE
- Introductory statement before walk
- Pressure to witter on about English introduction
- Introduction before gentle walk
- A rebel MP’s stirring opening words
- Quiet walk across England’s capital as an introduction
- Power and energy within range for a start
- “Peer wants lamb stewed” — words you may skip or read
- It starts when exercises and a stroll overlap
- Introduction initially put energy in tramp
- Page about walk — the first thing one reads?
Buddy explains!
The straight part
We know that "overture" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case overture = preamble.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 PREAMBLE mean?
PREAMBLE noun- A short preliminary statement or remark, especially an explanatory introduction to a formal document or statute.
- A syncword.
- To speak or write a preamble; to provide a preliminary statement or set of remarks.