amphibian

nouns

a flat-bottomed motor vehicle that can travel on land or water
amphibian, amphibious vehicle
an airplane designed to take off and land on water
amphibian, amphibious aircraft
cold-blooded vertebrate typically living on land but breeding in water; aquatic larvae undergo metamorphosis into adult form
amphibian
is a member of
the class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders; caecilians
amphibia, class Amphibia
is a type of (narrower)
animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
craniate, vertebrate

adjectives

relating to or characteristic of animals of the class Amphibia
amphibian, amphibious
pertains to
amphibia