A mount is to a horse or other animal or bird intended for riding. See horse, camel, elephant, Garuda.
A mount is an attachment point for equipment to vehicles. Mounts are usually made to enable the object mounted there to be moved in relation to the vehicle, but still remain affixed. Notable uses of mounts are for weapons and cameras, where the mount instead of the operator supports the weight of the equipment. See also turret, hard point and pintel.
Mount is a position in grappling, where one person sits on the chest of another. This is a favourable position to the uppermost combatant, as he may deliver strikes to the head of the other with ease. In submission fighting, this position often yields victory for the uppermost person unless the disadvantaged party makes a reversal in short order.
As both a noun and a verb, mount is used in gymnastics to go from the ground to the gymnastic apparatus (e.g. balance beam, parallel bars).
The wordmount is also a word for mountain, and is used in names such as Mount Ararat.
In computing, to mount a drive is to ready the device and make the filesystem ready for use by the operating system and the user. Devices may be mounted automatically (the term for this is generally called automounting), this depends on the operating system. Refer to filesystem.