乙 PINYIN yǐ DEFINITION second in order letter "B" or Roman "II" in list "A, B, C" or "I, II, III" etc second party (in legal contract, usually 乙方[yǐ fāng], as opposed to 甲方[jiǎ fāng]) EXAMPLE 乙方 / yǐ fāng second party (law)