trademark

Từ điển Oxford Advanced Learner 8th

trade·mark [trademark trademarks trademarked trademarking] BrE [ˈtreɪdmɑːk] NAmE [ˈtreɪdmɑːrk] noun
1. (abbr.TM)a name, symbol or design that a company uses for its products and that cannot be used by anyone else
•‘Big Mac’ is McDonald's best-known trademark.
2. a special way of behaving or dressing that is typical of sb and that makes them easily recognized
•Attention to detail is Anthea's trademark.
•The artist uses her trademark swirls of paint to good effect in her latest exhibition.

Culture:
emblems
Emblems, logos and other symbols are widely used as a simple way of identifying countries, states, organizations, companies and sports teams.
Emblems of Great Britain include the figure of ↑Britannia, a woman in long robes carrying a shield with a ↑Union Jack pattern. Each country within the United Kingdom has a national emblem, as well as its own flag. England’s official emblem is a red rose. Red and white roses were chosen as emblems during the ↑Wars of the Roses. Afterwards, the two were combined in the ↑Tudor rose. Other emblems include a bulldog, often wearing a Union Jack waistcoat, and ↑John Bull, an old-fashioned, fat country gentleman. Wales has two plants, the ↑leek and the ↑daffodil, and the ↑Welsh dragon as its emblems, and also uses the figure of a Welsh woman dressed in traditional costume. Welsh people often wear a daffodil on St David's Day. Scotland has the thistle (= a prickly weed) as its official emblem, but a ↑tartan pattern is used on many products made in Scotland. The national symbol of Northern Ireland is the ↑Red Hand of Ulster, which appears on its flag. The ↑shamrock and ↑harp are also associated with Ireland and the shamrock is the emblem of the Republic of Ireland.
Members of the British ↑royal family and the aristocracy have coats of arms. The ↑royal arms are placed behind judges and magistrates in law courts as a symbol of authority. Below the arms is the motto Dieu et mon droit, French for ‘God and my right’. Some commercial organizations whose products have royal approval are granted special permission to show the royal arms on their products.
The best-known emblem of the British government is the portcullis (= a barred, chained gate) that appears on official government papers. The Great Seal of the United States, which appears on US money and government documents, shows a ↑bald eagle, a very large bird which is itself a symbol of the US, and the Latin motto ↑e pluribus unum which refers to the fact that the US is one country made up from many individual states.
Each US state has a variety of emblems, including animals and plants which are commonly found in that state. For example, ↑Michigan has a state bird (the robin), a state fish (the trout), a state flower (the apple blossom), a state insect (the dragonfly) and a state stone (the Petoskey stone). These symbols may appear on the state flag and on official documents.
Most commercial organizations, charities, political parties, sports clubs, etc. have an emblem that they put on flags, notepaper, badges and vehicles, sometimes together with their initials. These emblems are often so well known that there is no need for the organization’s name to be added. They may involve a picture that suggests the name, e.g. a picture of an apple for Apple computers, or the name written in a particular way. Such commercial emblems can be very valuable and may be registered as trademarks, to prevent anyone else using them.