Cryptic crossword clue
Caterpillar heading for Mundesley after Norwich is devastated 8

The most common and most likely answer to this crossword clue is the 8 letter word INCHWORM

I've seen this crossword clue in Independent
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Buddy explains!

The straight part
We know that "Caterpillar" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case caterpillar = inchworm.
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 INCHWORM mean?

INCHWORM noun
  1. The larva of a moth of the family Geometridae.
INCHWORM verb
  1. To move in a looping fashion, like an inchworm.
  2. To crawl or creep slowly.

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