Crossword Genius

Written message to recall missing rays? Odd! (4)

Ross

I believe the answer is:

memo

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

'written message' is the definition.
'memo' can be an answer for 'message' (memo is a kind of message). I am not certain of the 'written' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for memo that I've seen before include "In brief, a note of events" , "Reminder (abbr)" , "A little something to be remembered" , "It will remind" , "- Currie, Br. politician" .)

I've seen this clue in The Hindu.
Want a hint initially instead of a full solution? Install my app