The most common and most likely answer to this crossword clue is the 10 letter word IMPEDIMENT
I've seen this crossword clue in The Sunday Telegraph
I
M
P
E
D
I
M
E
N
T
More clues leading to the result IMPEDIMENT
- Let one quite quietly correct grasping people
- Check setter’s trapped, without a little money
- Check naughty child’s revision, including primarily music, English and numeracy
- I’m in prison without money, it’s a burden
- Timid men curious about gym block
- I am bound to earn some money in opposition
- The speaker’s standing on section of facade or barrier
- This person’s architectural feature creates an obstruction
- Obstacle in road going north associated with part of old building
- I’m in prison without money, that’s the snag
Buddy explains!

The straight part
We know that "barrier" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case barrier = impediment.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 IMPEDIMENT mean?
IMPEDIMENT noun- A hindrance; that which impedes or obstructs progress.
- A disability, especially one affecting the hearing or speech.
- (chiefly in the plural) Baggage, especially that of an army; impedimenta.