(usually plural) small personal articles or clothing or sewing items; "buttons and needles are notions"
a general inclusive concept
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"
a certain degree of unwillingness; "a reluctance to commit himself"; "his hesitancy revealed his basic indisposition"; "after some hesitation he agreed"
(physics) opposition to magnetic flux (analogous to electric resistance)