collared lizard Syllabification: (col·lared liz·ard)Definition of collared lizard noun a lizard that is typically marked with spots and bands and has a distinctive black-and-white collar. It is found in dry rocky areas in the southern US and Mexico. Crotaphytus collaris, family Iguanidae collared lizard in other Oxford dictionaries Definition of collared lizard in the British & World English dictionary