一刻[ikkoku] minute
一刻も早く[ikkokumohayaku] immediately
一刻千金[ikkokusenkin] every moment is precious
印刻[inkoku] seal engraving

印刻師[inkokushi] seal engraver
夏時刻[natsujikoku] daylight-saving time
午刻[gokoku] noon
行動発起時刻[koudouhakkijikoku] h-hour

アラビア数字[arabiasuuji] Arabic numeral
キリル文字[kirirumoji] Cyrillic character
ギリシア文字[girishiamoji] Greek character
羅馬字[roomaji] Latin alphabet
ロシア文字[roshiamoji] Russian character

異体字[itaiji] kanji variants
一字[ichiji] letter
一字千金[ichijisenkin] word of great value
一丁字[itteiji] single letter or character
一文字[ichimonji] straight line