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1. A belief or opinion: had an old-fashioned notion of what qualities were most important in a mate.
2. A mental image; an idea or conception: Do you have any notion of what I'm referring to? See Synonyms at idea.
3. An impulse or whim: I suddenly had the notion of walking by the river.
4. notions Small lightweight items for household use, such as needles, buttons, and thread.
[Middle English nocioun, concept, from Latin nōtiō, nōtiōn-, from nōtus, known, past participle of nōscere, to get to know; see gnō- in the Appendix of Indo-European roots.]
(Knitting & Sewing) chiefly US and Canadian pins, cotton, ribbon, and similar wares used for sewing; haberdashery