The most common and most likely answer to this crossword clue is the 8 plus 6 letter word ACHILLES TENDON
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More clues leading to the result ACHILLES TENDON
- Nurse working after pains located around sick body part
- After bagging Munro, say, experts continue to nurse part of foot
- Halts indolence if this is damaged? On the contrary!
- A cold needs not to spread – get a tissue
- Hellenic son, tad weak here?
- Sick in pain with East Enders, finish on weak spot
- A most unfriendly conclusion about possible site of leg injury
- A badly loaded trunk, short side first — it’ll move as you walk
- A cold snap precedes Cockney losing a leg in accident spot
- & 12a Coldness when sitting in seat troubled butt and leg? The latter, partly
Buddy explains!

The straight part
We know that "it’ll move as you walk" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it’ll move as you walk = achilles tendon.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.