Explore capital, say (4)

I believe the answer is:

roam

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

'explore' is the definition.
Although both the answer and definition are verbs in their base form, I cannot see how one could define the other.

'capital say' is the wordplay.
'capital' becomes 'Rome' (capital of Italy).
'say' indicates a 'sounds like' (homophone) clue.
'rome' is a homophone of 'ROAM'.

Can you help me to learn more?

(Other definitions for roam that I've seen before include "Stray" , "Prowl" , "Ramble without purpose" , "Peregrinate" , "Meander" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.