European/American menu ok for dinner? (7)

I believe the answer is:

eatable

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

'dinner?' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe you can see an association between them that I don't see?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for eatable that I've seen before include "May be consumed" , "Edible" , "Fit for consumption" , "OK to swallow" , "Digestible" .)

I've seen this clue in The Independent.

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