‖n. pl. [ NL., fr. L. vermis worm + lingua tongue. ] [ Called also Vermilingues. ] (Zool.) (a) A tribe of edentates comprising the South American ant-eaters. The tongue is long, slender, exsertile, and very flexible, whence the name. (b) A tribe of Old World lizards which comprises the chameleon. They have long, flexible tongues. [ 1913 Webster ]