whatchamacallit

(ˈʍətʃəməˈkɑlɪt)

n. a name for a person or thing whose real name has been forgotten or is being avoided. I lost my—you know—my whatchamacallit—my watch!

Name	Pronounced	Usage
Nirupama	-	Indian, Hindi, Kannada
Ingmar	ING-mahr	Swedish
Davit	-	Georgian
Lorna	LAWR-nə	English
HÜLya	-	Turkish
Iokua	-	Hawaiian