also: じゅうせん
noun
General term for any vertical line, often contrasted with 横線 (horizontal line).
See also: 横線
紙に縦線を引いてください。
Please draw a vertical line on the paper.
noun
vertical bar (symbol)
Specifically refers to the vertical bar character '|' used in computing, mathematics, or typography.
パイプ記号は縦線とも呼ばれる。
The pipe symbol is also called a vertical bar.
noun
bar line (music)
Only with reading じゅうせん
In musical notation, the vertical line that separates measures. Read じゅうせん in this context.
楽譜の縦線は小節を区切る。
The bar line in sheet music separates measures.
横線 means 'horizontal line', the opposite of 縦線.
Compound of 縦 (vertical) and 線 (line). The reading たてせん uses the kun'yomi of 縦, while じゅうせん uses the on'yomi.