The most common and most likely answer to this crossword clue is the 8 letter word REGULATE
I've seen this crossword clue in Independent
R
E
G
U
L
A
T
E
More clues leading to the result REGULATE
- Control, say, brought into sport recently
- Worried after reversal of gun control
- Control things or argue and let loose?
- For example entering game, dead set
- Greek character with pistol held up police
- Break a rule — get control
- Get a rule revised to exercise control
- Police concerned with university left to block entrance
- Control toboggan rising in speed
- Control report about good university
Buddy explains!

The straight part
We know that "control" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case control = regulate.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 REGULATE mean?
REGULATE verb- To dictate policy.
- To control or direct according to rule, principle, or law.
- To adjust to a particular specification or requirement: regulate temperature.
- To adjust (a mechanism) for accurate and proper functioning.
- To put or maintain in order.