The most common and most likely answer to this crossword clue is the 4 letter word WINO
I've seen this crossword clue in The Daily Telegraph
W
I
N
O
More clues leading to the result WINO
- Boozy type reveals how to be a complete loser
- Warrant Officer imbibing at home, a heavy drinker
- One who habitually drinks at home, without going outside
- Boozer's chic without curtains
- Drunk to achieve nothing
- Down-and-out, like team with such a record?
- Lose everything as an alcoholic
- Lush piece of Gershwin orchestration
- Lush part of meadow in Oxfordshire
- Get in first round in boozer
Buddy explains!

The straight part
We know that "Lush" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case lush = wino.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 WINO mean?
WINO noun- A chronic or heavy drinker of cheap wine or other alcohol; a drunk or drunkard.
- A wine enthusiast; an oenophile.
- A hypothetical particle that is the superpartner of the W boson.