The most common and most likely answer to this crossword clue is the 4 letter word ACER
I've seen this crossword clue in The Guardian
A
C
E
R
More clues leading to the result ACER
Buddy explains!
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 ACER mean?
ACER noun- An English unit of land area (symbol: a. or ac.) originally denoting a day's plowing for a yoke of oxen, now standardized as 4,840 square yards or 4,046.86 square meters.
- Any of various similar units of area in other systems.
- (usually in the plural) A wide expanse.
- (usually in the plural) A large quantity.
- A field.
- The acre's breadth by the length, English units of length equal to the statute dimensions of the acre: 22 yds (≈20 m) by 220 yds (≈200 m).
- A duel fought between individual Scots and Englishmen in the borderlands.