{i} act of advertising, promotion, drawing attention to, act of promoting (generally in order to sell goods or services); public announcement or printed notice designed to attract attention; ad; advert; public announcement (also advertizement)
If you say that an example of something is an advertisement for that thing in general, you mean that it shows how good that thing is. The England team were a poor advertisement for European football tonight
A public notice, especially a paid notice in some public print; anything that advertises; as, a newspaper containing many advertisements
An advertisement is an announcement in a newspaper, on television, or on a poster about something such as a product, event, or job. Miss Parrish recently placed an advertisement in the local newspaper. = advert, ad