From Longman Dictionary of Contemporary Englishdry bread/toastdry bread/toastDFFbread etc eaten on its own without anything such as butter or jam spread on it → dry
Examples from the Corpus
dry bread/toast• Felt v. contented but tired. 1230 lunch, carrots, dates, dry bread.• Serve chilled with hot dry toast.• His breakfast consists of dry bread and a cup of tea.• Who wants to count calories and munch on a piece of dry toast at such a time?• However, don't feed your feathered friends very dry bread, desiccated coconut or salty food.• After a cup of strong coffee and a slice of dry toast, she contemplated the day ahead.• It went down well, with dry bread to mop up the water. 