The most common and most likely answer to this crossword clue is the 3 letter word CUL
C
U
L
More clues leading to the result CUL
- Where there's many a U-turn - constant messing with sad clue?
- Accused rogue hemming in learner driver in street
- ‘Blind alley’, possibly clued as ‘Close’, originally
- Cad’s clue is dreadful — it doesn’t get you anywhere
- Lawsuit with French aristo turning to cross large street
- Accused in crash involving learner driver in blind alley
- Blind alley, as clued cryptically by foremost of compilers
Buddy explains!

The straight part
We know that "Where there's many a U-turn" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case where there's many a u-turn = cul.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.