b.To advance over or press upon something:pain caused by a bone impinging upon a nerve. v.tr. To encroach upon; limit:"One of a democratic government's continuing challenges is finding a way to protect ... secrets without impinging the liberties that democracy exists to protect"(Christian ...
b.To advance over or press upon something:pain caused by a bone impinging upon a nerve. v.tr. To encroach upon; limit:"One of a democratic government's continuing challenges is finding a way to protect ... secrets without impinging the liberties that democracy exists to protect"(Christian ...