• 今晩こんばん — this evening
• 晩ばんご飯はん — dinner
• 毎晩まいばん — every night
• 晩年ばんねん — later years (of life)
• 晩秋ばんしゅう — late autumn
• 晩婚ばんこん — late marriage
• 晩成ばんせい — late blooming/success
• 晩酌ばんしゃく — evening drink

晩 combines 日 (sun) with 免 as a phonetic, pointing to the time when the sun is gone — dusk and nightfall.

By extension, it often carries a nuance of “lateness,” whether time of day (晩ご飯), season (晩秋), or life stage (晩年).