The most common and most likely answer to this crossword clue is the 5 letter word TRAIT
I've seen this crossword clue in The Daily Telegraph
T
R
A
I
T
More clues leading to the result TRAIT
- Characteristic of renegade abandoning the rank and file
- Feature one that tweets about God
- Bird embracing hawk-headed god’s attribute
- Fresh air in vacated tenement property
- Distinctive character of bird artist captured
- Feature of bird stuffed by artist
- Feature some extra items
- Characteristic of son leaving performing artist
- Characteristic paintings turned over onto it
- Characteristic skill returns with technological subject
Buddy explains!

The straight part
We know that "Feature" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case feature = trait.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 TRAIT mean?
TRAIT noun- An identifying characteristic, habit or trend.
- An uninstantiable collection of methods that provides functionality to a class by using the class’s own interface.