The most common and most likely answer to this crossword clue is the 7 letter word SEEPAGE
I've seen this crossword clue in The Times
S
E
E
P
A
G
E
More clues leading to the result SEEPAGE
- Glimpse errand boy's narrow escape?
- Leak linking visit to young boy up in court
- Incomplete cross-reference for “leak”?
- Look over part of document showing what’s leaking
- Notice youngster at wedding making escape
- Maybe waste words introducing cross reference
- Notice chap at wedding making escape
- Notice attendant making dripping
- Look at attendant’s leak
- Leak instruction to look elsewhere?
Buddy explains!

The straight part
We know that "narrow escape" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case narrow escape = seepage.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 SEEPAGE mean?
SEEPAGE noun- The process by which a liquid leaks through a porous substance; the process of seeping.
- Water that has seeped or oozed through a porous soil.