definition of
notion

[1] #1 notion n. [impression, feeling, belief, opinion] a vague idea in which some confidence is placed; "his impression of her was favorable"; "what are your feelings about the crisis?"; "it strengthened my belief in his sincerity"; "I had a feeling that she was lying". wn

[2] #2 notion n. a general inclusive concept. wn

[3] #3 notion n. [whim, whimsy, whimsey] an odd or fanciful or capricious idea; "the theatrical notion of disguise is associated with disaster in his stories"; "he had a whimsy about flying to the moon"; "whimsy can be humorous to someone with time to enjoy it". wn

[4] #4 notion n. (usually plural) small personal articles or clothing or sewing items; "buttons and needles are notions". wn