DEF: to do their particular kind of work.
EX: The fishermen have been plying their trade in this area for hundreds of years.
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DEF: 1.To encourage (verb) 2. A sharp wheel used by horse riders to encourage the horses to go faster (noun). EX: 1. […]
a business or business activity that two or more people or companies work on together
Chilean miners who worked in the nitrate mines.