anti-dumping duty(n = noun.possession) - a tariff imposed to prevent dumping;
is a kind of protective tariff

breach of duty, civic duty, countervailing duty, customs duty, death duty, duty, duty assignment, duty period, duty tour, export duty, fatigue duty, fiduciary duty, filial duty, guard duty, import duty, jury duty, legal duty, line duty, line of duty, neglect of duty, off duty, on duty, point duty, sense of duty, sentry duty, shipboard duty, shore duty, stamp duty, tonnage duty, tour of duty