labor beginning prior to the 37th week of gestation
uncommonly early or before the expected time
born after a gestation period of less than the normal time
too soon or too hasty
a social class comprising those who do manual labor or work for wages
productive work (especially physical work done for wages)
strive and make an effort to reach a goal
work hard
undergo the efforts of childbirth
any piece of work that is undertaken or attempted
