The Collaborative International Dictionary of English v.0.48:

Remanet \Rem"a*net\ (-n?t), n. [L., it remains.] (Legal
   Practice)
   A case for trial which can not be tried during the term; a
   postponed case. [Eng.]
   [1913 Webster]

Bouvier's Law Dictionary, Revised 6th Ed (1856):

REMANET, practice. The causes which are entered for trial, and which cannot
be tried during tho term, are remanets. Lee's Dict. Trial, vii.; 1 Sell. Pr.
434; 1 Phil. Ev., 4.