Writ of mesne
WRIT OF MESNE, Breve' de medio, old English law. A writ which was so called, by reason of the words used in the writ, namely, Unde idem A qui medius est inter C et praefatum B; that is, A, who is mesne between C, the lord paramount, and B, the tenant paravail. Co. Litt. 100, a.