wheat bread

a little bit of bread and no cheese

Used to represent the song of the yellowhammer (Emberiza citrinella).

best thing since sliced bread

Alternative form of greatest thing since sliced bread.

bread and butter

That which is central or fundamental, as to one's business, survival, or income; a staple or cornerstone.

bread and circuses

Food and entertainment provided by the state, particularly if intended to placate the people.

bread of life

Anything which is regarded as a source or inspiration of spiritual nourishment.

brown bread

Dead.

burn bread

To cause something unfortunate to happen to (someone) by mentioning it; to jinx something for (someone).

butter one's bread on both sides

To profit from two things at the same time, especially when those things seem contradictory or incompatible.