Gee, or gee-over -- move to the right.
Haw, or haw-over -- move to the left.
Whoa -- stop.
On-by -- ignore that distraction, don't take that turn, keep on.
Line them out -- hold the dogs out before the race.
Gangline -- the center line that runs up the middle of the team.
Neckline -- the lines that connect the dogs to the gangline.
Snow hook -- the silver anchor on the side or back of the sled; it can be "sunk" in the snow to stop the dogs.
Trail -- when you want to pass, you yell, "Trail!" and the other team must slow down and allow you to pass, except in the last half-mile of a race.
Sled bag -- the fabric bag in front of the driver, a mandatory piece of equipment. If a dog is hurt, it can rest in the bag while the team continues.