The most common and most likely answer to this crossword clue is the 4 letter word AXLE
I've seen this crossword clue in The Times
A
X
L
E
More clues leading to the result AXLE
- Dismiss involving Left in centre of revolution
- Rod has beer around ten
- Bar ten beer bottles
- East onto A40 for one taking wheel
- Bar turned around by cracking beer
- Tool for cutting around left wheel shaft
- Rod‘s tipple laced with unknown ingredient
- In the car, I take the wheel
- 10 in something to buy in 19 bar
- Gripping back of wheel, pull shaft
Buddy explains!

The straight part
We know that "Rod" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rod = axle.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 AXLE mean?
AXLE noun- Shoulder.
- The pin or spindle on which a wheel revolves, or which revolves with a wheel.
- A transverse bar or shaft connecting the opposite wheels of a car or carriage; an axletree.
- An axis.