The rupee lost some ground as it weakened by 8 paise to 67.35 against the dollar at the forex market today following fresh demand for the American unit from importers and banks amid a lower opening in domestic equities.Yesterday, the local currency rose 5 paise to close at atwo-week high of 67.27 on sustained selling of dollars by banks and exporters on the back of a higher opening in the domestic stock market.The benchmark BSE Sensex fell 33.44 points to 27,245 in early trade.