The most common and most likely answer to this crossword clue is the 6 letter word HERNIA
H
E
R
N
I
A
More clues leading to the result HERNIA
- An heir dancing around gets rupture
- . Medical condition affected hearing mostly
- Complaint of pain rehashed and rejected
- Woman’s involved in a medical breakthrough
- Hearing not good? It’s awful — a medical condition
- Complaint upset some diva in 3
- . Hearing mostly affected, a condition
- Complaint from woman in a soup
- Pain rehabilitation helping to counter agonising medical condition
- Patch up an heir's rupture
Buddy explains!

The straight part
We know that "Complaint" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case complaint = hernia.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 HERNIA mean?
HERNIA noun- A disorder in which a part of the body protrudes abnormally through a tear or opening in an adjacent part, especially of the abdomen.