1. a large herbivorous lizard found in the southwestern United States and northwestern Mexico, known for inflating its body when threatened

Examples

• The chuckwalla basked on the hot desert rocks in the morning sun.
• When cornered, the chuckwalla wedged itself into a rock crevice and inflated its body.
• Chuckwallas are among the largest lizards native to North America.
• The desert hiker spotted a chuckwalla sunning itself on a boulder.
• Chuckwallas feed primarily on desert vegetation and flowers.
• The reptile enthusiast studied the chuckwalla’s defensive behaviors in the wild.