濃 (readings: のう, こ; Japanese kanji) means “Concentrated / Thick / Dark / Undiluted”. It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 濃厚 (thick/rich).
What does 濃 mean?