盟 (méng)
oath; pledge; union; to ally; league, a subdivision corresponding to p
Etymology
Phonosemantic compound. 皿 represents the meaning and 明 represents the sound.
Shuowen Jiezi
《說文》：“，《周禮》曰：‘國有疑則盟。諸侯再相與會，十二歲一，北面詔天之司慎司命。，殺牲歃血，朱盤玉敦，以立牛耳。’从囧，从血。，篆文，从朙。盟，古文从明。”