thingamabob
(informal), thingamajig (informal), thingummy (informal), thingy (informal),
doodad (US, informal), gizmo (informal), thing, widget (humorous), doohickey
(US, informal), doodah (UK, informal)
thingamajig
(informal), thingummy (informal), doodah (UK, informal), hoojamaflip (UK,
informal)
thingumabob
(informal), thingamajig (informal), thingummy (informal), thingy (informal),
doodad (US, informal), gizmo (informal), thing, widget (humorous), doohickey
(US, informal), doodah (UK, informal)