The most common and most likely answer to this crossword clue is the 9 letter word ECLIPSING
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More clues leading to the result ECLIPSING
Buddy explains!
The straight part
We know that "Blocking" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case blocking = eclipsing.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 ECLIPSING mean?
ECLIPSING verb- Of astronomical bodies, to cause an eclipse.
- To overshadow; to be better or more noticeable than.
- (Irish grammar) To undergo eclipsis.
- The act or process by which something is eclipsed.