What body condition term describes a horse with an overly thick neck?

When referring to a horse's body condition and physical characteristics, the term "drafty" is often used to describe horses that have a heavy build or are robustly muscled, typically with a thicker neck and overall substantial frame. Draft horses, for instance, are breeds known for their muscular bodies and thick necks, which helps in their work of pulling heavy loads.

The term effectively conveys a sense of mass and weight, characterizing a horse that displays these attributes, particularly in its neck region. This term not only applies to the horse's neck but also encompasses its overall body structure, indicating a horse that may have an abundance of condition or muscle.

Other options like "grazing" does not relate to body condition, while "heavy-set" and "cobby" can describe other aspects of build but do not specifically focus on the thick neck characteristic synonymous with "drafty." This distinction makes "drafty" the most appropriate term for a horse exhibiting an overly thick neck.