|Origin:||notio, from notus; NOTICE2|
no‧tion W3 [countable]
an idea, belief, or opinion
misguided notions of male superiority
The traditional notion of marriage goes back thousands of years.
She had only a vague notion of what she wanted to do.
the notion that human beings are basically good
She had no notion what he meant.
accept/challenge/reject etc a notion
They reject the notion of group guilt.
2 [plural] American EnglishDLH
small things such as thread and buttons that are used for sewing