The most common and most likely answer to this crossword clue is the 8 letter word WOOLSHED
I've seen this crossword clue in Independent
W
O
O
L
S
H
E
D
Buddy explains!

The straight part
We know that "in which Shearer strips 4D?" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case in which shearer strips 4d? = woolshed.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 WOOLSHED mean?
WOOLSHED noun- A shed where sheep are shorn.