The ____ of March (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
ides
(Other definitions for ides that I've seen before include "15/7?" , "Julius Caesar's unlucky day in March" , "Julius Caesar died in these March days" , "Caesar was killed in this side of March" , "Time of March when Caesar was assassinated" .)