1. (noun) something unspecified whose name is either forgotten or not known

• doodad
• doohickey
• gimmick
• gismo
• gizmo
• gubbins
• thingamabob
• thingamajig
• thingmabob
• thingmajig
• thingumabob
• thingumajig
• thingummy
• whatchamacallit
• whatchamacallum
• whatsis
• widget

1. (noun) something unspecified whose name is either forgotten or not known

• stuff