According to thefreedictionary.com a yahoo is <q>a crude, brutish, or obscenely coarse person or someone that is not intelligent or interested in culture</q>. Yahoo is also used as a way to express joy or excitement.
In computer or information technology terms Yahoo! refers to the Internet services company that offers various services. One of these services is Yahoo! mail which is a free web based email service. Yahoo! mail is one of the largest Internet based e-mail providers in the world.
Yahoo! mail is a free Internet based email service provided by the Internet services company Yahoo. It is one of the largest Internet base e-mail services in the world.