Japanese

Syllable

ー ‎(romaji ¯)

1. the long vowel mark: marks a long vowel in katakana (and less commonly in hiragana) when placed after a syllable

Usage notes

This mark appears as a horizontal line in horizontal writing (横書き) and as a vertical line in vertical writing (縦書き). The Japanese names are 長音符 ‎(chōonpu), 音引き ‎(onbiki) or 棒引き ‎(bōbiki)