Time punctuation (5)
I believe the answer is:
colon
'time punctuation' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for colon that I've seen before include "Large intestine; punctuation mark" , "Part of intestines" , "Panama port; part of intestine" , "Stop - part of intestine" , "cash" .)