Put one's name in neon, perhaps? (4)
I believe the answer is:
sign
'put' is the definition.
(signing is a kind of putting)
'one's name in neon perhaps?' is the wordplay.
I cannot really see how this works, but
'name' could be 'si' and 'si' is located in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for sign that I've seen before include "Show" , "Public notice; portent" , "Signal, gesture" , "Put one's name to a document" , "Traffic control - to write one's name" .)