The most common and most likely answer to this crossword clue is the 9 letter word NUTRIMENT
N
U
T
R
I
M
E
N
T
More clues leading to the result NUTRIMENT
- Food item held by parvenu — trim entryist
- Food fan: I’m tucking into split
- It sustains teachers with old poetry books
- Intent to get drunk with rum as sustenance
- Turn it off when people come in for food
- Fanatic keeping slim having space for healthy food
- Note time, turn off life support
- Food fanatic before term in stir
- Head, accepting haircut, went inside for food
- Eats noodle to keep slim, even if empty
Buddy explains!

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 NUTRIMENT mean?
NUTRIMENT noun- A source of nourishment; food.
- Something that promotes growth or development; a nutrient.