On strike (3)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
out
'on strike' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for out that I've seen before include "Walking back to the pavilion" , "A way to escape" , "Inaccurate - dismissed" , "Dismissed, in cricket" , "(Of a flower) open" .)