The most common and most likely answer to this crossword clue is the 7 letter word MIDRIFF
I've seen this crossword clue in The Times
M
I
D
R
I
F
F
More clues leading to the result MIDRIFF
- Stomach provided here?
- Tummy, if here?
- Stomach bug overwhelms powerless wimp
- How one might describe performing jazz player’s diaphragm?
- Central section with organs where guitarist stops suddenly?
- Firm, if confused, about opening of deep part of a trunk
- Diaphragm suggesting how song may abruptly end?
- Stomach the first piece of music I had to play repeatedly
Buddy explains!

The straight part
We know that "Stomach" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case stomach = midriff.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 MIDRIFF mean?
MIDRIFF noun- The middle section of the human torso, from below the chest to above the waist