Tip, either one from Eve, Norman and David (3)
I believe the answer is:
end
'tip either' is the definition.
'end' can be an answer for 'tip' (tip can mean the end of something). I am not certain of the 'either' bit.
'one from eve norman and david' is the wordplay.
'one from' suggests taking the first letters.
'and' means one lot of letters go next to another.
'david' becomes 'd' (this might be a standard abbreviation which I don't know about).
The first letters of 'eve norman' is 'en'.
'en'+'d'='END'
Can you help me to learn more?
(Other definitions for end that I've seen before include "Finished" , "target" , "Time to break-up (3,2,4) - See 12" , "Termination" , "Game at bowls" .)