The most common and most likely answer to this crossword clue is the 8 letter word THREADED
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More clues leading to the result THREADED
Buddy explains!

The straight part
We know that "Passed through" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case passed through = threaded.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 THREADED mean?
THREADED verb- To put thread through.
- To pass (through a narrow constriction or around a series of obstacles).
- To screw on, to fit the threads of a nut on a bolt
- Having threads.
- (Of messages) Arranged in a thread.