مُسَخَّرٌ

Any one that is constrained, or compelled, [brought into subjection, or made subservient or submissive,] and managed, unable to free himself from constraint. (TA.)

وَالنُّجُومُ مُسَخَّرَاتٌ بِأَمْرِهِ [in the Qur'an, 16:12 means And the stars are made subservient, or submissive,] running their courses. (Az, TA.)