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负:背着;荆:荆条。背着荆条向对方请罪。表示向人认错赔罪。
[proffer a birch and ask for a flogging;apology for wrong-doing;be contrite and ask for pardon;carry a rod on one's back and ask to be punished;carry firewood and ask to be spanked] 背上荆条请求责罚。表示真诚地认罪赔礼 我则做小,负荆请罪。——《元曲选外编·渑池会》