The most common and most likely answer to this crossword clue is the 10 plus 4 letter word NINETEENTH HOLE
I've seen this crossword clue in Financial Times
N
I
N
E
T
E
E
N
T
H
H
O
L
E
More clues leading to the result NINETEENTH HOLE
- Where one may order round after round
- Bar in hotel then is fantastic – poet’s even seen in it
- Where one buys round after round?
- Where rounds follow rounds?
- Source of relief at the end of a course?
- Bar, of course, two prominent extractions, canine teeth have new filling and cavity
- Where sportsmen go for round after round?
- & 28 Fancy hotelis where one might get a drink
Buddy explains!

The straight part
We know that "Bar" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case bar = nineteenth hole.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.