Definition of thingamajig
: something that is hard to classify or whose name is unknown or forgotten
Examples of thingamajig in a sentence
It's one of those thingamajigs that can give you driving directions.
reattach that thingamajig and the machine should work
Origin and Etymology of thingamajig
alteration of earlier thingum, from thing
First Known Use: 1824
THINGAMAJIG Defined for English Language Learners
Definition of thingamajig for English Language Learners
: something whose name you have forgotten or do not know
Seen and Heard
What made you want to look up thingamajig? Please tell us where you read or heard it (including the quote, if possible).