What do you call the thing in highlighted area in English?!

Question:

What do you call the thing in highlighted area in English?

Here is the corresponding screenshot:

http://www.garson.ir/ss.gif

Answers:

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It's called a cloche. But in your drawing something real dicey is going to happen to the diners being served, when you replace it... ;-)

All the best.

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That is a dome tray cover.

Pronounce dome like "home"

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