Crossword Genius

Parade design on arm, for example (6)

Ross

I believe the answer is:

tattoo

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

'parade' is the definition.
(I've seen this before)

'design on arm for example' is the wordplay.
I cannot really understand how this works, but
'on' could be 'at' (I've seen this in other clues) and 'at' is present in the answer.
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is located in the answer.
The remaining letters 'to' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for tattoo that I've seen before include "Indelible impression" , "Military signal/display" , "Indelible picture or design on skin" , "Skin design; mil. display" , "made by drumming" .)

I've seen this clue in The Telegraph.
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