ad·ver·tise·ment / ˈadvərˌtīzmənt; ədˈvərtiz-/ • n. a notice or announcement in a public medium promoting a product, service, or event or publicizing a job vacancy. ∎  (advertisement for) inf. a person or thing regarded as a means of recommending something: unhappy clients are not a good advertisement for the company. ∎ archaic a notice to readers in a book.

advertisement A form of display in which an individual makes itself as conspicuous as possible. It is used most commonly by male animals holding a territory, in order to ward off rivals and to attract females.

advertisement A form of display in which an individual makes itself as conspicuous as possible. It is used most commonly by male animals holding a territory, in order to ward off rivals and to attract females.