خُمُسٌ

and ↓ خُمْسٌ A fifth part; (Msb, K;) as also ↓ خَمِيسٌ, (S, in article ثلث, and IAmb and Msb,) agreeably with a rule applicable in the case of every one of the units, except ثَلِيثٌ: (TA:) some allow this last; but AZ disallows it, and خميس also: (S in article ثلث:) plural أَخْمَاسٌ. (Msb, TA.)

[Hence, apparently,] ضَرَبَ أَخْمَاسَهُ فِى أَسْدَاسِهِ He turned his five senses towards his six relative points; [namely, above, below, before, behind, right, and left:] an allusion to the collecting all the thoughts to examine a thing, and turning the attention in all directions. (MF.)