The most common and most likely answer to this crossword clue is the 8 letter word ASCENDER
A
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More clues leading to the result ASCENDER
- Note enclosed by a person posting letter
- Part of letter a transmitter broadcast
- What’s evident in guest’s last letter, see, penned by a correspondent?
- Upper part of letter or card seen when sorted
- A correspondent welcoming the beginning of chatty part of letter
- Small character part for someone on the way up
- Climber found in only one part of garden
- Part of letter one posts, say
- A person posting a letter, we hear — someone coming up the hill?
- . Climber races frantically to conquer tip
Buddy explains!

The straight part
We know that "part of letter" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case part of letter = ascender.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 ASCENDER mean?
ASCENDER noun- A person or thing that ascends.
- (graphology) The portion of a lowercase letter that extends above the midline.
- A mechanical device used for ascending on a rope; ascendeur.