It is important to be able to correctly identify the parts of a horse to discuss conformation.

Abdomen/Belly - broad area underneath the horse

Back - area between the withers and the loin. 

Barrel - area below the back, around the rib cage.

Buttock - area below the dock, at the very back of the muscled area above the hind legs.

Cannon Bone - the long bone in the lower leg.

Cheek/Jowls - the rounded bones on the side of the horses head.

Chest - area between the shoulders, across the front of the horse.

Chin Groove - hollow area between the chin and the jaw.

Coronet - narrow band at the hair line; between the hoof and the pastern.

Crest - the top of the neck.

Croup - area in front of the doak and tail.

Dock - solid, flessy part of the horses tail; where the tail joins the body.

Ears

Elbow - point at the top of the forearm.

Eye

Fetlock - the joint between the pasturn and cannon bones.

Flank - area at the back of the barrel; below the loin.

Forearm - upper part of the foreleg; between the knee and upper arm.

Gaskin - area at the front of the hind leg; above the hock and below the stifle.

Head

Hock - major joint on the rear legs; between the cannon bone and gaskin.

Hoof - the horses foot.

Knee - major joint in the forelegs; between the cannon and the forearm.

Loin - area in front of and below the croup, and above and in front of the hind quarters.

Muzzle - area on the head that includes the nostrils, chin and mouth.

Neck - area between the head and the shoulder.

Nostril - the horses nose.

Pastern - the small bone above the foot; between the coronet band and fetlock.

Poll - area between the ears at the top of the head.

Shoulder - area at the front of the horse, between the neck and barrel.

Stifle - area below and behind the flank and in front of the hind quarters.

Throat Latch - hollow under the head, between the cheeks.

Withers - area at the base of the mane, where the neck and the back meet.