The most common and most likely answer to this crossword clue is the 8 letter word MARYLAND
I've seen this crossword clue in The Guardian
M
A
R
Y
L
A
N
D
More clues leading to the result MARYLAND
- MD treated November malady right
- Baltimoreans are here to ruin Dylan broadcast
- Travelling north, one US state consumed by another, in short — here’s a third!
- Fellow with daughter taking in a railway line in US state
- Arrive after month crossing heart of large US state
- Crazy about nearly losing sweetheart in a 22, twice!
- Queen to disembark in state
- Madly ran crazy state
- State: Doctor madly ran
Buddy explains!
The straight part
We know that "here’s a third" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case here’s a third = maryland.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.