The most common and most likely answer to this crossword clue is the 4 letter word ROOD
I've seen this crossword clue in The Times
R
O
O
D
More clues leading to the result ROOD
- Reportedly regretted being cross
- Speaker's blunt and cross
- Cross an old piece of land
- Crucifix with diamonds affixed to jumper
- Sounded impolite and cross
- Utterly rude, being cross
- Hand finishing under jumper makes one cross
- Cross street full of holes
- Children lose head, being cross
- Loudly regretted getting cross
Buddy explains!

The straight part
We know that "cross" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cross = rood.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 ROOD mean?
ROOD noun- A crucifix, cross, especially in a church.
- A measure of land area, equal to a quarter of an acre.
- A measure of five and a half yards in length.