From the online free dictionary: mount 1 (mount) v. mount·ed, mount·ing, mounts v.tr. 1. To climb or ascend: mount stairs. 2. To place oneself upon; get up on: mount a horse; mount a platform. 3. To climb onto (a female) for copulation. Used of male animals. 4. a. To furnish with a horse for riding. b. To set on a horse: mount the saddle. 5. To set in a raised position: mount a bed on blocks. 6. a. To fix securely to a support: mount an engine in a car. b. To place or fix on or in the appropriate support or setting for display or study: mount stamps in an album; mount cells on a slide. 7. To provide with scenery, costumes, and other equipment necessary for production: mount a play. 8. To organize and equip: mount an army. 9. To prepare and set in motion: mount an attack. 10. a. To set in position for use: mount guns. b. To carry as equipment: The warship mounted ten guns. 11. To post (a guard). v.intr. 1. To go upward; rise. 2. To get up on something, as a horse or bicycle. 3. To increase in amount, extent, or intensity: Costs are mounting up. Fear quickly mounted. See Synonyms at rise. n. 1. The act or manner of mounting. 2. A means of conveyance, such as a horse, on which to ride. 3. An opportunity to ride a horse in a race. 4. An object to which another is affixed or on which another is placed for accessibility, display, or use, especially: a. A glass slide for use with a microscope. b. A hinge used to fasten stamps in an album. c. A setting for a jewel. d. An undercarriage or stand on which a device rests while in service.

"mount" can also be used as a noun, in which case it would mean the horse itself. "I halted my mount to rest for a while." It can also mean to equip and start a military action. "The English mounted an attack at first daylight." It can also mean to put a stuffed animal or fish on a plate or plaque as a prize. "He had the fish he caught mounted and put it on his wall." "mounting" can be a the present perfect form of "mount"; it can also be a noun meaning the frame or support of something being displayed.

They are many different definitions behind the word mount/mounting. Here are a few examples though: - To mount: to get on the back of. ex. I mounted my horse. In this context, it can also be used sexually as in "the man mounted..." - To attach, generally for support. ex. I mounted the microscope to the desk. - Before a name ex. Mount Royal I hope a few of my examples help!