Crossword Genius

Economical over, one delivered on stump possibly, in debut at Lords? (6,6)

Ross

I believe the answer is:

maiden speech

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

'debut at lords?' is the definition.
'maiden speech' can be an answer for 'debut' (thesaurus). I am not certain of the 'at lords?' bit.

'economical over one delivered on stump possibly' is the wordplay.
I cannot really see how this works, but
'over' could be 'maiden' (maiden is a kind of over) and 'maiden' is found in the answer.
The remaining letters 'speech' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).

'in' acts as a link.

Can you help me to learn more?

(Other definitions for maiden speech that I've seen before include "First words in parliament" , "Au fait with urban life" , "First ever public address" , "original house address" .)

I've seen this clue in The Telegraph.
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