a. [ Gr. 'amfi`bios living a double life, i. e., both on land in water; 'amfi` + bi`os life. ] 1. Having the ability to live both on land and in water, as frogs, crocodiles, beavers, and some plants. [ 1913 Webster ]
2. Pertaining to, adapted for, or connected with, both land and water. [ 1913 Webster ]
The amphibious character of the Greeks was already determined: they were to be lords of land and sea. Hare. [ 1913 Webster ]
3. Of a mixed nature; partaking of two natures. [ 1913 Webster ]
Not in free and common socage, but in this amphibious subordinate class of villein socage. Blackstone. [ 1913 Webster ]