The most common and most likely answer to this crossword clue is the 5 letter word CUBIT
C
U
B
I
T
More clues leading to the result CUBIT
- Old measure of copper coin?
- Length of old copper piece
- Copper coin couple found in yard, perhaps, long ago
- The young bear it in some measure
- Middle class independent is into discount measure
- Measure piece of copper
- Copper section, in length between foot and yard
- Measure once shortened, divided by two
- Youngster with oomph? 25 many years ago!
- Copper measure
Buddy explains!

The straight part
We know that "Measure once" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case measure once = cubit.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 CUBIT mean?
CUBIT noun- Various former units of length notionally based on the distance from a grown man's elbow to his fingertips, standardized in different places and times at values between 35 and 60 cm.
- The ulna.