olemus
väike ühemõõtmeline märgijada

Wiktionary:
20. a small amount of text. Specifically:
20.1. a written or printed row of letters, words, numbers or other text, especially a row of words extending across a page or column, or a blank in place of such text
Synonym: row
20.2. a verse (in poetry)

näiteid
line break -- realõpp
line density -- reatihedus
line feed -- reavahetus
line printer -- reaprinter
line spacing -- reasamm

vt ka
- rida (1)
- rida (2)