Bandwidth
Amount of data transmitted from the site.

Entry Page
The first page of the site that was viewed by the visitor.

Exit Page
The last page that the visitor viewed.

Hit
A request for any file (page, image, script, etc).

Host
A computer connected to Internet. User hosts are shown in the reports as IP addresses or domain names.

Page View
A request for a page file.

Spider (Robot)
A program which automatically gets information from sites. Spiders are used to gather information for search engines, extract emails, check links, check the site, etc.