Superior meal, no seconds required (5)

I believe the answer is:

upper

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

'superior' is the definition.
(eg an upper house in a parliament)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for upper that I've seen before include "catcher of swans?" , "Higher in rank" , "Part of a shoe; drug" , "Higher; more northerly" , "Pep pill" .)

I've seen this clue in The Telegraph.

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