The short hand is the hour hand on a clock.

see you in an hour.

Of course it takes more than an hour for the hour hand (the "BIG" hand) and the minute hand (the "LITTLE" hand) to line up but it does happen once each hour. Keep in mind, the hour hand is known as the BIG hand because an hour is bigger than a minute, which is indicated by the LITTLE hand.

The purpose of the hour hand on the clock is to tell which hour it is. *

The short fat hand

The hour hand is the shortest hand of all three on a clock.