1. Plural of bluetongue; large Australian lizards of the genus Tiliqua, characterized by a broad blue tongue and stocky body.
Usage: Common in zoology and herpetology contexts; Often kept as pets
2. A viral disease affecting livestock, especially cattle and sheep, transmitted by midges and characterized by inflammation of the mouth and tongue.
Usage: Veterinary term; Also called bluetongue disease

Examples

• The zoo's collection includes three bluetongues from Australia.
• Bluetongues are popular reptile pets because of their docile temperament.
• The farmer's cattle were vaccinated against bluetongues.
• Bluetongues can grow up to 60 centimeters in length.
• The disease bluetongues spreads rapidly during warm months when midges are active.
• Several bluetongues were observed basking on rocks in the wildlife sanctuary.