(meteorology) A line of thunderstorms, hundreds of miles long, with squalls at the advancing edge

plural of punch line

(manufacturing) A system of workers and machinery in which a product is assembled in a series of consecutive operations; typically the product is conveyed by a continuously moving belt

A rollerblade: a roller skate with all wheels aligned in a single row along the sole for greater speed and maneuverability.

A railway line on which trains travel away from a major terminus. / (travel, aviation) the next and subsequent flights in an itinerary.

A railway line on which trains travel towards a major terminus.

Alternative spelling of up line

Describing a higher level in a hierarchical management structure

(chiefly UK) A railway track; a pair of rails on which a railway train runs.

Describing a lower level in a hierarchical management structure