line

A path through two or more points (compare ‘segment’); a continuous mark, including as made by a pen; any path, curved or straight.

“The arrow descended in a curved line.”

A rope, cord, string, or thread, of any thickness.

A hose or pipe, of any size.

“a brake line”

Direction, path.

“the line of sight”

The wire connecting one telegraphic station with another, a telephone or internet cable between two points: a telephone or network connection.

“I tried to make a call, but the line was dead.”

A clothesline.

A letter, a written form of communication.

“Drop me a line.”

A connected series of public conveyances, as a roadbed or railway track; and hence, an established arrangement for forwarding merchandise, etc.

“a line of stages”

A trench or rampart, or the non-physical demarcation of the extent of the territory occupied by specified forces.

The exterior limit of a figure or territory: a boundary, contour, or outline; a demarcation.

A long tape or ribbon marked with units for measuring; a tape measure.

A measuring line or cord.

That which was measured by a line, such as a field or any piece of land set apart; hence, allotted place of abode.

A threadlike crease or wrinkle marking the face, hand, or body; hence, a characteristic mark.

Lineament; feature; figure (of one's body).

A more-or-less straight sequence of people, objects, etc., either arranged as a queue or column and often waiting to be processed or dealt with, or arranged abreast of one another in a row (and contrasted with a column), as in a military formation.

“The line forms on the right.”

The regular infantry of an army, as distinguished from militia, guards, volunteer corps, cavalry, artillery etc.

A series or succession of ancestors or descendants of a given person; a family or race; compare lineage.

A small amount of text. Specifically:

Course of conduct, thought, occupation, or policy; method of argument; department of industry, trade, or intellectual activity.

The official, stated position (or set of positions) of an individual or group, particularly a political or religious faction.

“Remember, your answers must match the party line.”

A set of products or services sold by a business, or by extension, the business itself.

“How many buses does the line have?”

A number of shares taken by a jobber.

A measure of length:

A maxwell, a unit of magnetic flux.

(1800s, with "the") The batter’s box.

The position in which the fencers hold their swords.

Proper relative position or adjustment (of parts, not as to design or proportion, but with reference to smooth working).

“the engine is in line / out of line”

A small path-shaped portion or serving of a powdery illegal drug, especially cocaine.

Instruction; doctrine.

Population of cells derived from a single cell and containing the same genetic makeup.

(perfusion line) a set composed of a spike, a drip chamber, a clamp, a Y-injection site, a three-way stopcock and a catheter.

A group of forwards that play together.

A vascular catheter.

“line sepsis”

To place (objects) into a line (usually used with "up"); to form into a line; to align.

“to line troops”

To place persons or things along the side of for security or defense; to strengthen by adding; to fortify.

“to line works with soldiers”

To form a line along.

To mark with a line or lines, to cover with lines.

“to line a copy book”

To represent by lines; to delineate; to portray.

To read or repeat line by line.

“to line out a hymn”

To hit a line drive; to hit a line drive which is caught for an out. Compare fly and ground.

“Jones lined to left in his last at-bat.”

To track (wild bees) to their nest by following their line of flight.

To measure.