Sentence:  "Cribbing" is scarcely a disease, though it may be productive of disease of the larynx. It is a habit usually acquired by young horses, either in idle moments or by imitation, often from the dam. The colt takes any wooden substance, such as a paling or manger, between his teeth and gnaws it. From that he proceeds to inhale the air, and often, when this habit has been acquired, he becomes a <WSD>"windsucker</WSD>". It is probable that windsucking produces irritation in the throat and air-passages, and may lead to some enlargement, and consequently to roaring; but it is more probable that windsucking is the effect of disease. 
Meaning of the word marked with <WSD> tags:  A horse with the habit of windsucking.