All mammals: 1  Are vertebrates (which means they have a backbone The column of bones (spine) in the back of many animals. 2  It supports the body. 3  An animal with a backbone is called a vertebrate. or spine A stiff, sharp projection on an animal; another word for quill.
Television presenter. A presenter is a person who introduces or hosts television programs (or segments thereof such as an infomercial advertiser).
host (in computing) A host (also known as network host) is a computer or other device that communicates with other hosts on a network. Hosts on a network include clients and servers -- that send or receive data, services or applications.