Definition from Wiktionary, the free dictionary
- To put different items or groups together and treat them, or think of them as one single group.
- People tend to lump turtles and tortoises together, when in fact they are different creatures.
- April 14 2007, The Guardian, The poorest of the poor
- "Those who asked the authorities for help were a mixed bag: elderly, unemployed, sick or injured, widows, orphans, the mentally ill; all were lumped together in a "one size fits all" welfare system."
to put items together