The most common and most likely answer to this crossword clue is the 8 letter word BARBICAN
B
A
R
B
I
C
A
N
More clues leading to the result BARBICAN
- Air a BBC broadcast on new theatre
- Arts centre’s Caribbean display lacking energy
- Short doll is able to provide defence
- Dolly girl almost is able to keep …
- Academic, principally religious writer has article for Watchtower
- Save article by writer for Arts Centre
- London complex issuing claim of competence following insult
- Stop cabin construction as a defensive post
- Tower, public house and cabin building
- Energy exhausted, Caribbean playing defence for keeps
Buddy explains!

The straight part
We know that "a defensive post" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a defensive post = barbican.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 BARBICAN mean?
BARBICAN noun- A tower at the entrance to a castle or fortified town
- A fortress at the end of a bridge.
- An opening in the wall of a fortress through which the guns are levelled; a narrow loophole through which arrows and other missiles may be shot.
- A temporary wooden tower built for defensive purposes.