the GNU version of the Collaborative International Dictionary of English
n. The member of a family whose labor supplies the food of the family; one who works for his living.
The Century Dictionary and Cyclopedia
n. One who earns a livelihood for himself and those dependent upon him: usually restricted to one who is directly dependent upon his earnings from day to day or from week to week.
n. That by means of which one earns one's bread.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. one whose earnings are the primary source of support for their dependents
Word Usage
"Unfortunately, the breadwinner is the power holder and humans are not all always fair and responsible with their power."