| TR | the imposition of duties or quotas on imports in order to protect domestic industry against foreign competition |
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| TR | any of several bushy-tailed rodents of the genus Neotoma of western North America |
| TR | a lane at sea that is a regularly used route for vessels |
| TR | a route followed by traders (usually in caravans) |
| TR | a secondary school teaching the skilled trades |
| TR | a secret (method or device or formula) that gives a manufacturer an advantage over the competition |
| TR | a government order imposing a trade barrier |
| TR | an organization of employees formed to bargain with the employer |
| TR | an organized attempt by workers to improve their status by united action especially via labor unions (especially the leaders of this movement) |
| TR | the system or principles and theory of labor unions |
| TR | a worker who belongs to a trade union |
| TR | steady winds blowing from east to west above and below the equator |