The most common and most likely answer to this crossword clue is the 7 letter word VERANDA
I've seen this crossword clue in The Times
V
E
R
A
N
D
A
More clues leading to the result VERANDA
- Retired vicar with a partly enclosed portico
- What’s partly over and above porch
- Queen entering London museum’s portico
- Museum of London houses royal gallery
- Occasionally heard in museum gallery
- Girl embraces joiner in porch
- Queen Victoria & Albert are absorbing the terrace
- Gallery for queen in London museum
- Sheltered terrace with girl outside
- Queen entering royal museum gallery
Buddy explains!

The straight part
We know that "portico" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case portico = veranda.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 VERANDA mean?
VERANDA noun- A gallery, platform, or balcony, usually roofed and often partly enclosed, extending along the outside of a building.