The most common and most likely answer to this crossword clue is the 7 letter word ENDMOST
I've seen this crossword clue in The Times
E
N
D
M
O
S
T
More clues leading to the result ENDMOST
- Last time some returning to tour Newfoundland on vacation
- At the back, Charlie Lunnon held firm, tho’ was caught finally
- Last in a series of “Doctors” goes beyond finish time
- Met Dons playing in final
- Furthest Maidstone is off course, avoiding the A1
- Doctors tend complicated cases last
- Send off on time, taking second position at the finish
- Farthest north tenants unusually modest
- Furthest goal confronting the majority
- Last to finish with the majority
Buddy explains!

The straight part
We know that "Last" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case last = endmost.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 ENDMOST mean?
ENDMOST adjective- Last in a series, furthest away