غُرْلَةٌ

The قُلْفَة [or prepuce]. (S, O, Msb, K.) Hence, in a tradition of Aboo-Bekr when he was a boy, رَكِبَ الخَيْلَ عَلَى غُرْلَتِهِ, meaning He rode horses when he was small in age, before he was circumcised. (TA.)