brown-bag

listen to the pronunciation of brown-bag
الإنجليزية - الإنجليزية
To bring one's lunch to work or school in a brown paper bag
A short presentation or seminar on a given subject, especially one given at lunchtime

Did you attend the brown bag Tuesday on healthy exercise habits?.

To carry one's lunch from home, as in a bag, rather than purchase it from a cafeteria or restaurant
To take (liquor) into a public establishment, such as a restaurant, that does not serve alcohol
To take (lunch) to work, typically in a brown paper bag