Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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assembly line a set-up in a factory whereby a product being put together passes, in moving along a track, conveyor belt, or the like, a succession of stations with workers, each of whom adds, adjusts, or secures apart to the whole.
base line in baseball, the area within which a runner must stay while running from base to base. [3 definitions]
bottom line (informal) the final figure or lowest line in a financial statement, showing net profit or loss. [2 definitions]
bread line a line in which people stand to receive food from a charity organization or the government during hard times, or the people in such a line.
color line any institutionalized separation of races that is based on skin color and that results in social and economic discrimination and oppression; color bar.
date line see International Date Line.
DEW line a line of radar stations, located along the seventieth parallel in Canada and the United States, that provides advance notice of approaching hostile aircraft or missiles (acronym for "distant early warning").
draw the line to set a limit on what is allowed.
end line either of two lines, one at each end of a basketball court, football field, or the like, that marks the limit of the playing area.
fall line a geographical line connecting the waterfalls of parallel rivers that indicates a drop in land level. [2 definitions]
finish line a line or other marker indicating the end of a race.
firing line the line or set of positions from which troops fire at an enemy or targets. [3 definitions]
foul line in baseball, either of the lines extending from home plate through first and third bases to the limits of the outfield. [3 definitions]
frost line the limit past which frost does not penetrate the soil.
hard-line unwilling to yield, esp. in regard to ideas or ideology.
hook, line, and sinker (informal) without any question or hesitation; completely.
hot line a direct communication system set up for use in times of emergency or crisis, esp. between heads of government. [2 definitions]
in-line skate a roller skate consisting of a boot with wheels attached in a single line down the middle of the sole.
in-line skating rollerskating on in-line skates for recreation or to display skilled moves.
International Date Line (sometimes l.c.) an imaginary north-south line drawn in the Pacific Ocean, roughly at the 18th meridian, on the east side of which, by international agreement, the calendar date is one day earlier than it is on the west side; date line.