Gee string

a ten-in-hand bull team came down South A street .... The off bull on the "gee" string bowed his glossy neck and champed his bit impatiently,

The gee string (rope by which dog team is attached to front of sled) is then unsnapped

There are a few men that wear their pistols exposed for the same reason that some wear diamond breast pins, or a cowboy hat with a gee-string hanging down the back of his neck.