whatsit means A thing (used in a vague way to refer to something whose name one cannot recall, or that one is embarrassed to say) Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- A thing (used in a vague way to refer to something whose name one cannot recall, or that one is embarrassed to say)“Pass me one of those whatsits, will you?”