no·tion 
/ˈnoʊʃən/ noun
plural no·tions /ˈnoʊʃən/ noun 1 [count] : an idea or opinion
▪ He has some pretty strange notions. ▪ I only have a (slight) notion of the poem's meaning. ▪ She had a vague notion about what happened. ▪ They have different notions [=conceptions] of right and wrong. ▪ The study disproves any notion that dolphins are not intelligent. 2 [count] : an idea about doing something : a sudden wish or desire
▪ She had a notion to try skydiving. 3 notions [plural] US : small useful things (such as pins, thread, buttons) that are used for sewing
▪ a sewing shop that sells fabrics, books, tools, and notions
▪ He has some pretty strange notions. ▪ I only have a (slight) notion of the poem's meaning. ▪ She had a vague notion about what happened. ▪ They have different notions [=conceptions] of right and wrong. ▪ The study disproves any notion that dolphins are not intelligent.
▪ She had a notion to try skydiving.
▪ a sewing shop that sells fabrics, books, tools, and notions
