1. A belief or opinion. 2. A mental image or representation; an idea or conception. 3. A fanciful impulse; a whim. See synonyms at idea. 4.notions Small lightweight items for household use, such as needles, buttons, and thread.
ETYMOLOGY:
Middle English nocioun, concept, from Latin nti, ntin-, from ntus, known, past participle of nscere, to get to know. See gn- in Appendix I.