USUKinternationalneutral
- A plain brown paper bag used for carrying food or small items, especially a packed lunch.
USinternationalinformal
- An informal lunchtime meeting or seminar at which attendees bring their own lunches; a 'bring-your-own-lunch' event.
USUKinternationalinformal
- To bring and eat one's own packed lunch (often carried in a brown paper bag); to participate in a brown-bag meeting.