مِسْنَافٌ

(tropical:) A camel that makes the saddle to shift backwards; (S, M, K, TA;) wherefore a سِنَاف is put to him: (S, TA:) and, (K,) or as some say, (S,) that makes it to shift forwards: (S, K, TA:) so says Lth: but ISh disallows his explanation, saying that it means a she-camel that makes the load to shift forwards; and that مِجْنَأَةٌ [a word which I have not found anywhere except in this instance] signifies the contrary: (TA:) or that makes her fore girth to slip forward; opposite of مُدْرِجٌ and مِدْرَاجٌ. (TA in article درج.)

See also مُسْنِفَةٌ, in two places.