thingamajig

and thingy (ˈθɪŋəmədʒɪg and ˈθɪŋi)

n. a gadget for which the proper name has been forgotten or is unknown. Hand me that thingamajig with the copper base, will you?

Name	Pronounced	Usage
Nurullah	-	Arabic, Turkish
Eithne	ETH-na, ET-na, EN-ya, EN-a	Irish, Scottish
Aysel	-	Turkish, Azerbaijani
Kaarlo	KAH:R-lo	Finnish
Leutgard	-	Ancient Germanic
Deusdedit	-	Late Roman