The most common and most likely answer to this crossword clue is the 7 letter word VISCERA
I've seen this crossword clue in The Guardian
V
I
S
C
E
R
A
More clues leading to the result VISCERA
- Guts failing to save second artist
- Running races after rocket: that’s guts!
- Strangling first person, criminal craves guts
- Is absorbed by medal – time to show guts
- Vicars prepared to acquire English organs
- Church artist with power and guts
- Design varies to include a hundred internal parts
- Forces’ sweetheart is a hundred at heart – that shows guts
- Caver getting worried about one’s organs
- I crave first taste of southern fried offal
Buddy explains!

The straight part
We know that "internal parts/internal parts" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case internal parts/internal parts = viscera.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 VISCERA mean?
VISCERA noun- Collectively, the internal organs of the body, especially those contained within the abdominal and thoracic cavities, such as the liver, heart, or stomach.
- The intestines.
- One of the organs, as the brain, heart, or stomach, in the great cavities of the body of an animal; especially used in the plural, and applied to the organs contained in the abdomen.
- Specifically, the intestines.