A long narrow mark or stroke on a surface

• In geometry, a one-dimensional figure extending without end

A row or queue of people or things

• Items arranged in a straight series

A boundary or demarcation between areas

• The outer edge or outline of a shape

A rope, cord, or fishing line

• A clothesline for hanging laundry

A telephone or network connection, or the wire carrying it

• A hose or pipe for conveying a fluid

A row of written or printed text

• A single verse or a line of dialogue

A route or system of public transport, especially a railway

• An established route followed by vehicles

A set of related products sold by a company

• A field of activity or line of work

A series of ancestors or descendants; lineage

• A familial branch traced through generations

The official, stated position of a group or person

• A doctrine or policy that members are expected to follow

To place people or things in a row

• To align or arrange neatly

To form a row along the side of something

• To border or edge a street, path, or route

To mark with lines or stripes

• To depict or outline with drawn lines

Acronym for long interspersed nuclear element in genomics

• A class of autonomous retrotransposons in eukaryotes