جمس1 جَمَسَ, (A, Msb, K,) aor. ـُ (Msb, TA,) inf. n. جُمُوسٌ (S, Msb, K) and جَمْسٌ; (TA;) and جَمُسَ, aor. ـُ (TA;) It (grease, As, S, A, Msb, K, and clarified butter, and water, A, K, but جَمَدَ is more commonly said of the last, K, or جَمَسَ is incorrect when said of water, As, TA) congealed. (As, S, A, Msb, K.) جُمْسَةٌ A tough date: (IDrd, * M, K, * TA:) a date ripening (As, S, Z, K) altogether, (As, Z, K, TA,) but as yet hard, not mellow, or digestible, or easy of digestion: (As, S, Z, K:) pl. جُمَسٌ. (As, TA.) [See بُسْرٌ.]A2:  Also A distinct number, or herd, of camels. (O, K.) جَامِسٌ Grease, (A,) and clarified butter, (TA,) and water, (S,) or it is improperly applied to the last, (As, TA,) in a state of congelation. (S, A, Mgh, TA.) b2:  A plant that has lost its freshness, or juiciness, (AHn, K,) and become old, and hard, or tough. (AHn, TA.) b3:  صَخْرَةٌ جَامِسَةٌ A tough rock, (TA,) firm in its place. (K, TA.) [In the TA is added مُقْشَعِرَّةٌ: but this is evidently a mistranscription, for مُسْتَقِرَّةٌ, which adds nothing to the explanation.]جَامُوسٌ [The buffalo;] a kind of بَقَر; (Mgh, Msb, TA;) well known: (K:) n. un. with ة: (K:) and pl. جَوَامِيسُ: (S, Msb, K:) an arabicized word, (T, S, K,) from the Persian; (T, S;) originally گَاوْ مِيشْ. (T, K.)