Definitions of site:

• noun:   physical position in relation to the surroundings

  Example: "The sites are determined by highly specific sequences of nucleotides"

• noun:   the piece of land on which something is located (or is to be located)

  Example: "A good site for the school"

• noun:   a computer connected to the internet that maintains a series of web pages on the World Wide Web

  Example: "The Israeli web site was damaged by hostile hackers"

• verb:   assign a location to