علس

عَلَسٌ A certain kind of wheat, having two grains in one husk, (S, O, Msb, K,) and sometimes one grain, or three grains; (Msb;) it is found in the region of El-Yemen; (TA;) and is the wheat of San'à: (S, O, K:) or a sort of wheat, of good quality, but difficult to cleanse, growing in the parts of El-Yemen: (AHn, O:) or [a kind of grain] like wheat, but difficult to cleanse, (Mgh, Msb,) having two grains in one envelope, and it is the corn of San'à: (Mgh:) or a certain black grain, which people eat in times of dearth, or drought, (Mgh, Msb,) after grinding it: (Mgh:) or, (Msb, in the K “ and,”) accord. to IAar, (O,) i. q. عَدَسٌ [or lentils]. (O, Msb, K.)