trader
n. countable B1 Intermediate US //ˈtɹeɪdɝ// UK //tɹˈeɪdɐ// trad·er
n. a person whose job is to buy and sell things, like goods, stocks, or currencies, to make a profit.
n. a person who engages in the transfer of goods, services, or financial instruments for commercial gain.
The stock trader monitors the market all day.
Local traders set up their stalls in the town square every Saturday morning to sell fresh produce.
While institutional traders manage large portfolios for banks, retail traders often use personal accounts to speculate on price movements in the foreign exchange market.
From trade + -er.