No noun in fancy lecture (5)

I believe the answer is:

orate

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

'lecture' is the definition.
(I've seen this in another clue)

'no noun in fancy' is the wordplay.
'no' becomes 'O' (O resembles 0).
'noun in fancy' becomes 'rate' (I am not sure about this - if you are sure you should believe this answer much more).
'o'+'rate'='ORATE'

Can you help me to learn more?

(Other definitions for orate that I've seen before include "Declaim or rant" , "Spout" , "Speak like Cicero?" , "Hold forth" , "Make a formal address" .)

I've seen this clue in The Independent.

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.