(S, M, A, Msb, K) and ↓سُدْسٌ (S, Msb, K) A sixth part; (S, M, A, Msb, K;) as also ↓سَدِيسٌ, (S, Msb, K,) a form used by some, like as one says عُشْرٌ and عَشِيرٌ: (S:) plural أَسْدَاسٌ. (M, Msb, TA.)
2.
[Hence, apparently, the saying, ضَرَبَأَخْمَاسَهُ فِى أَسْدَاسِهِ, which see explained voce خُمُسٌ.]