1 very large man
PHRASES a gentle giant Some people are intimidated by his size, but in fact he's a gentle giant. | a giant of a man He was a giant of a man, standing nearly seven feet tall.
2 sth that is very large/important
ADJ. corporate, multinational | car, chemicals, financial, food, industrial, oil, retail, etc. The oil giant Esso is planning to set up a new refinery in the port. | literary Camus is considered to be one of the twentieth century's literary giants.
PREP. ~ among/amongst The Amazon is a giant amongst rivers. | ~ of The company is now one of the giants of the computer industry.