Merriam-Webster Collegiate Dictionary - glanders

 noun plural but singular or plural in construction  Etymology: Middle French glandre glandular swelling on the neck, from Latin glandulae, from plural of glandula, diminutive of gland-, glans  Date: 1523 a contagious and destructive disease especially of horses caused by a bacterium (Pseudomonas mallei syn. Actinobacillus mallei) and characterized by caseating nodular lesions especially on the respiratory mucosae and lungs that tend to break down and form ulcers