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ine derives from the Latin linum, meaning flax plant from which linen is produced; at one time, a stretched linen thread was the most reliable way to determine a straight line.The word line can refer to:a "straight line", in the geometric sense; see line (mathematics).a length of rope.a queue area.a line of written, printed, or spoken text.a product line, in marketing.Science and technology:an obsolete unit of measurement, equal to one-twelfth or later one-tenth of an (imperial) inch.a circuit (or loop) in electrical engineering.a Powerline for electric power transmission.a telephone line.a measure of video display resolution or image resolution; see line (video).a program to emulate Linux on Microsoft Windows in the manner of WINE — see LINE.an archaic name of the unit for magnetic flux, now named the maxwell.Lines (video game)."LINE-1" stands for "long interspersed nucleotide element-1", an abundant retrotransposon of the human genome.Military:the infantry, as in line infantry, since foot soldiers used to pitch their tents in the field in straight lines; hence nowadays "Borneo Lines", for instance, is the name of a barracks.the line of battle in naval warfare, hence "ship of the line".a shipping line is a company engaged in sea transport, (from which comes the term Ocean liner).a line may refer to lineage in genealogy or evolution.Sport:in cricket, the direction of a delivery; see line and length.in American football, the offensive line (O-Line) or defensive line (D-Line)in ice hockey, the three forwards; a team's forwards are divided into lines (almost always grouped by ability) which change all at once ("line change") in lieu of individual substitutions. The "first line" starts the game and consists of the team's elite forwards."doing a line" may refer to snorting cocaine. See more at Wikipedia.org...