Nupsi

Noun

 * 1)  a small, rounded protrusion on a larger item
 * 2)  a small, often round component; small thingy
 * 1)  a small, often round component; small thingy
 * 1)  a small, often round component; small thingy
 * 1)  a small, often round component; small thingy

Usage notes

 * Mostly used when the described thing doesn't have a name, or when the name is not known to the speaker