The most common and most likely answer to this crossword clue is the 4 letter word NOSH
I've seen this crossword clue in Independent
N
O
S
H
More clues leading to the result NOSH
- Offspring knocked over hot food
- Ham producer has son in for a feed
- Feeds small numbers at college, in High School
- Small number say nothing, finding food
- Tuck leg up and button it
- What’s put on table occasionally annoys husband
- Youngster repelled by hotel food
- Drama involving squadron leader's fare
- Eats starter of sushi during visit to Japanese theatre
- I won’t keep mum’s food
Buddy explains!

The straight part
We know that "Eats" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case eats = nosh.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 NOSH mean?
NOSH noun- Food; a light meal or snack.
- Fellatio.
- (usually with on) To eat a snack or light meal.
- To perform fellatio (on); to blow.