The most common and most likely answer to this crossword clue is the 4 letter word DICK
I've seen this crossword clue in The Times
D
I
C
K
More clues leading to the result DICK
- Detective frequently spotted in school canteen?
- 50011001000 deciphered by Private Eye
- Little Richard didn’t intend covering “Kiss” — only Number Ones
- Former copper leaving pad – a detective
- Busy don instigating contract killing, all upfront
- Met leader, having to leave early: another 1 Across?
- Sleuth appearing sweet when spotted?
Buddy explains!

The straight part
We know that "etective/frequently spotted in school canteen" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case etective/frequently spotted in school canteen = dick.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 DICK mean?
DICK noun- A male person.
- The penis.
- A highly contemptible person; a jerk.
- Absolutely nothing.
- Sexual intercourse with a man.
- To mistreat or take advantage of somebody (often with around or up).
- (of a man) To have sexual intercourse with.
- A detective.
- A declaration.
- Ten in Cumbrian sheep counting