Definitions of colon:

• noun:   the part of the large intestine between the cecum and the rectum; it extracts moisture from food residues before they are excreted
• noun:   a punctuation mark (:) used after a word introducing a series or an example or an explanation (or after the salutation of a business letter)
• noun:   a port city at the Caribbean entrance to the Panama Canal
• noun:   the basic unit of money in Costa Rica; equal to 100 centimos
• noun:   the basic unit of money in El Salvador; equal to 100 centavos
• name:  A surname (common: 1 in 3703 families; popularity rank in the U.S.: #423)