Meaning of the word whatchamacallit in English

What does whatchamacallit mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

whatchamacallit

US /ˈwɑː.tʃə.məˌkɑː.lɪt/
UK /ˈwɒtʃ.ə.məˌkɔːl.ɪt/

Noun

a word used to refer to something whose name one cannot recall, does not know, or does not wish to specify

Example:
Can you pass me the whatchamacallit, the thing for opening cans?
I need to fix the whatchamacallit on the car engine.