a baby boomer
An American person born during the "baby boom" following World War II, between the years of 1945 and 1965, during which the population of the United States increased by 40 percent. Typically used to describe members of this generation, who have been associated with economic prosperity, consumerism, self-indulgence. Primarily heard in US. Since baby boomers represent such a large percentage of the population, financial experts are concerned about the impact their retirement will have on the economy.
a ˈbaby boomer(American English also a ˈboomer) a person born during a period when many more babies are born than usual (called a baby boom), especially after the Second World War: The new President was a baby boomer, born in the 1950s.
n. someone born during the baby boom—from the last years of World War II until the early 1960s. When the baby boomers get around to saving up for retirement, you’re going to see a lot of investment scams.