Round bread 

Bread that come in a round from, Other similarlys #breadcake #cob #breadroll #batch #muffin

I would like a cheese round bread please

Round bread by Breadmen July 14, 2017

A round of bread 

A round of bread - Mainly used in context in the west midlands area of Shropshire, England.
When used in context, it means one piece of bread from a loaf.
However it can also be used as "a round of sandwiches" meaning 1 sandwich including 2 pieces of bread.

"How many rounds of bread do you want?"
"Oh, just a round of bread please."

A round of bread by Adamshifnal March 14, 2014