مَصِيرٌ
1.
A gut, an intestine, or a bowel, into which the food passes from the stomach; synonym مِعًى: (S, M, Msb, K:) or specially, as some say, of a bird, and of an animal which has a soft foot, or خُفّ, [as the camel,] and of such as have a cloven hoof: (M, TA:) plural [of pauc.] أَمْصِرَةٌ (M, K) and [of mult.] مُصْرَانٌ, and plural plural مَصَارِينُ: (S, M, A, Msb, K:) the last according to Sb; (M;) but some say that it is not established; (A;) and Lth says, that it is a mistake; but Az says, that it is plural of مُصْرَانٌ, and that the Arabs have given it this form of plural imagining the م to be a radical letter; (TA;) and some say, that مَصِيرٌ is of the measure مَفْعِلٌ, [originally مَصْيِرٌ,] derived from صَار إِلَيْهِ الطَّعَامُ [“ the food passed to it ”], and they say مُصْرَانٌ in like manner as they say مُسْلَانٌ as plural of مَسِيلُ المَاءِ, likening مَفْعِلٌ to فَعِيلٌ: (S, TA:) مِصْرَانٌ also is a dialect form of مُصْرَانٌ. (Fr, Sgh, TA.) [See also مَصَارّ, in article صر.]