adjective Date: circa 1837 1. being as basic as the earning of one's livelihood , b. reliable , dependable as a source of income , sent or given as thanks for hospitality
BREAD-AND-BUTTER
Meaning of BREAD-AND-BUTTER in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012