1. a small spiny mammal native to Australia and New Guinea that lays eggs and has a long snout
2. a monster in Greek mythology that was half woman and half serpent
Usage: mythology

Examples

• The echidna rolled into a ball when threatened by the dingo.
• Echidnas are one of only two types of mammals that lay eggs.
• We spotted an echidna foraging for ants in the Australian bush.
• The zoo’s echidna exhibit teaches visitors about monotremes.
• In Greek mythology, Echidna was known as the mother of monsters.
• The echidna used its long snout to probe for insects in the log.