Mad icon moved like a traveller (7)

I believe the answer is:

nomadic

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

'like a traveller' is the definition.
I can't judge whether this defines the answer.

'mad icon moved' is the wordplay.
'moved' is an anagram indicator.
'mad'+'icon'='madicon'
'madicon' with letters rearranged gives 'NOMADIC'.

Can you help me to learn more?

(Other definitions for nomadic that I've seen before include "Peripatetic" , "Itinerant" , "Given to wandering like travellers or Bedouins" , "Roaming" , "Moving around" .)

I've seen this clue in The Mirror.

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