Crossword Genius

In punctuation, does it make a point twice? (5)

Ross

I believe the answer is:

colon

I'm a little stuck... Click here to teach me more about this clue!

'in punctuation' is the definition.
'colon' can be an answer for 'punctuation' (colon is a kind of punctuation). I'm not certain of the 'in' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for colon that I've seen before include ": - bit of the gut" , "Part of intestines" , "Panama port; part of intestine" , "Stop - part of intestine" , "Part of body; two dots" .)

Want a hint initially instead of a full solution? Install my app