The most common and most likely answer to this crossword clue is the 8 letter word DARKLING
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Buddy explains!
The straight part
We know that "dim light" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dim light = darkling.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 DARKLING mean?
DARKLING noun- A creature that lives in the dark.
- In the dark; in obscurity.
- To be dark; to be visible only darkly.
- To become dark; to show indistinctly.
- Darkness
- Dark; growing dark; darkening.
- Obscure; taking place unseen, as if in the dark.