What does "dinglehopper" mean?

Something that one does not readily recall the name of.

What is a synonym for "dinglehopper"?

Common synonyms include: thingy.

noun, slang

noun, slang ·Uncommon ·College level

Noun

1
Something that one does not readily recall the name of. informal
"You press this, this... dinglehopper to get the motor started."

"You press this, this... dinglehopper to get the motor started."