verb (used with object) 1.to bring (one's own liquor) to a restaurant or club, especially one that has no liquor license.
2.to bring (one's lunch) to work or elsewhere, usually in a small brown paper bag.
verb (used without object) 3.to carry one's lunch in a brown paper bag.
adjective 4.brought to work, usually in a small brown paper bag: a brown-bag lunch.
Idioms 5.brown-bag it, to bring one's lunch to work or elsewhere, especially in a brown paper bag.