The most common and most likely answer to this crossword clue is the 8 letter word GOBBLING
I've seen this crossword clue in The Daily Telegraph
G
O
B
B
L
I
N
G
Buddy explains!
The straight part
We know that "Sound from turkey/eating" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sound from turkey/eating = gobbling.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 GOBBLING mean?
GOBBLING verb- To eat hastily or greedily; to scoff or scarf (often used with up)
- To make the sound of a turkey.
- The act of eating greedily and noisily.
- The sound of a turkey.