Longman Dictionary of Contemporary English - bread

~ n 1 a common important food made from flour, water, and yeast  (Would you like some bread with your soup? | a loaf of bread (=a large piece of bread that you buy and cut into pieces) | a slice of bread (=a thin piece of bread that you cut from a loaf) | white/brown bread (=bread baked with white or brown flour)) 2 old-fashioned money 3 your/sb's bread and butter informal the work that provides you with most of the money that you need in order to live  (I don't write just for fun - it's my bread and butter.) 4 earn your (daily) bread to earn the money that you need in order to live 5 know which side your bread is buttered on to know who to be nice to in order to get advantages for yourself  (- see also French bread, sliced bread)