The most common and most likely answer to this crossword clue is the 7 letter word ENSNARE
I've seen this crossword clue in The Daily Telegraph
E
N
S
N
A
R
E
More clues leading to the result ENSNARE
- Catch some veterans newly returned
- Flipping veteran sneakily conceals trap
- Trap set in earnest, leave it out
- Small spaces are filled by new trap
- Catch WWII performers entertaining new soldiers
- Veteran sneered at concealed climbing net
- Some mice ran sneakily over trap
- Kilmarnock’s initial shot from range at Ibrox finds net
- Squadron leader has Princess back round — about to get in gin
- Warne ran sneakily up holding catch
Buddy explains!

The straight part
We know that "to get in gin" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case to get in gin = ensnare.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 ENSNARE mean?
ENSNARE verb- To entrap; to catch in a snare or trap.
- To entangle; to enmesh.