Cryptic crossword clue
Zoo attendant after opening as porter 10

The most common and most likely answer to this crossword clue is the 10 letter word GATEKEEPER

I've seen this crossword clue in The Daily Telegraph
G
A
T
E
K
E
E
P
E
R


Buddy explains!

The straight part
We know that "porter" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case porter = gatekeeper.
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 GATEKEEPER mean?

GATEKEEPER noun
  1. A person or group who controls access to something or somebody.
  2. A person who guards or monitors passage through a gate.
  3. A common orange and brown butterfly with eyespots, Pyronia tithonus, of the family Nymphalidae.

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