The most common and most likely answer to this crossword clue is the 8 letter word EXAMINER
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More clues leading to the result EXAMINER
- Someone who tests old flame, a collier
- Inspector formerly an underground operative
- She tests chopper circling digger
- He’ll investigate cleaver turned up by digger
- Judge returned hand tool to prospector
- Inspector cut back one of Thatcher’s targets?
- Former collier framing a judge
- Former pit worker holding a marker
- French bloke outside fancy cinema knocked over inspector
- Digger once impressing a judge
Buddy explains!

The straight part
We know that "tester" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tester = examiner.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 EXAMINER mean?
EXAMINER noun- A person who investigates someone or something.
- A person who sets an examination.
- A person who marks an examination.