The most common and most likely answer to this crossword clue is the 4 letter word SKID
I've seen this crossword clue in The Times
S
K
I
D
More clues leading to the result SKID
- Runner would briefly lose control in motion
- Small child makes slide
- Tease to the right of second slip
- Travel down piste with daughter and slide out of control
- Son given child support for moving things
- Small child’s slide?
- Slip made by small child
- Slip by youngster carrying pole
- Children go back to front on slide
- Side-slip was in sport including such a manoeuvre
Buddy explains!

The straight part
We know that "support for moving things" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case support for moving things = skid.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 SKID mean?
SKID noun- An out-of-control sliding motion as would result from applying the brakes too hard in a car.
- A shoe or clog, as of iron, attached to a chain, and placed under the wheel of a wagon to prevent its turning when descending a steep hill; a drag; a skidpan.
- (by extension) A hook attached to a chain, used for the same purpose.
- A piece of timber or other material used as a support, or to receive pressure.
- To slide in an uncontrolled manner as in a car with the brakes applied too hard.
- To protect or support with a skid or skids.
- To cause to move on skids.
- To check or halt (wagon wheels, etc.) with a skid.
- A stepchild.