Definition of mounture:
(n) :
A horse or other animal used for riding; a mount.
(n) :
The part of a loom that holds the harnesses.
(n) :
(obsolete) The act or process of mounting.
(n) :
(obsolete) A part on any mechanical device that is used for mounting other parts.
(n) :
(obsolete) The angle at which a gun is raised for firing.
(n) :
(obsolete, astronomy) The angle of ascension.