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
Anzhela	-	Russian
Tammie	TAM-ee	English
Lindy	['lindi]
Sigismund	-	German, Ancient Germanic
Margh	-	Cornish
Philippa	FIL-i-pə (English), fi-LIP-ə (English)	English (British), German