The most common and most likely answer to this crossword clue is the 8 letter word KNUCKLED
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The straight part
We know that "Yielded" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case yielded = knuckled.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.
Crossword Answer definitions
KNUCKLED verb- To apply pressure, or rub or massage with one's knuckles.
- To bend the fingers.
- To touch one's forehead as a mark of respect.
- To yield.
- (chiefly in combination) Having a certain type of knuckles.