The most common and most likely answer to this crossword clue is the 8 letter word DAUGHTER
I've seen this crossword clue in The Times
D
A
U
G
H
T
E
R
More clues leading to the result DAUGHTER
- Family member seeing changing of the guard
- Child departs, giggling, scratching head
- Guard the wandering girl
- Relative I don't like that is involved in dodgy trade
- Girl died wrestling huge rat
- Part of issue the guard sorted
- Girl sees Changing of the Guard
- Issue with changing of the guard
- Issue raised by the Guardian, not the Scotsman, surprisingly
- Relation will show expression of disgust in time, right?
Buddy explains!

The straight part
We know that "Child" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case child = daughter.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 DAUGHTER mean?
DAUGHTER noun- One’s female offspring.
- A female descendant.
- A daughter language.
- A nuclide left over from radioactive decay.
- (of a parse tree) A descendant.
- (by extension) A female character of a creator.