老朋友

• Pinyin: lǎo péng you
• English Definitions: old friend, (slang) period, menstruation
• Notes: Classifiers: Other transcriptions: numeric: lao3 peng2 you5, wadegiles: lao³ p'eng² you, bopomofo: ㄌㄠˇ ㄆㄥˊ you, romatzyh: lao perng you