The most common and most likely answer to this crossword clue is the 7 letter word BATTING
B
A
T
T
I
N
G
More clues leading to the result BATTING
Buddy explains!

The straight part
We know that "In" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in = batting.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 BATTING mean?
BATTING noun- Cotton, wool, silk or synthetic material used to stuff the inside of a mattress, quilt etc.
- Special cotton for surgery.
- To hit with a bat or (figuratively) as if with a bat.
- To take a turn at hitting a ball with a bat in sports like cricket, baseball and softball, as opposed to fielding.
- To strike or swipe as though with a bat.
- To flutter
- To wink.
- To bate or flutter, as a hawk.
- (usually with 'around' or 'about') To flit quickly from place to place.
- The act of someone who bats.
- The action of using a bat.