The most common and most likely answer to this crossword clue is the 8 letter word SINGLETS
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Buddy explains!
The straight part
We know that "Tops" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tops = singlets.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 SINGLETS mean?
SINGLETS noun- A vest; a sleeveless garment with a low-cut neck, often worn underneath a shirt.
- A multiplet having a single member, especially a single spectroscopic peak.
- A quantum state having zero spin.
- (plurality, otherkinship) A single person occupying one human body.