いちろく

  1. noun (common) (futsuumeishi)

    (rolling) a 1 and a 6 (with two dice)

  2. noun (common) (futsuumeishi)

    dice gambling
    abbreviation

  3. noun (common) (futsuumeishi)

    (armed) robbery, mugging
    slang

  4. noun (common) (futsuumeishi)

    Edo period to early Meiji non-working day falling on all days of the month with a 1 or a 6 in it (when written in kanji numerals, i.e. the 1st, 11th, 16th, 21st and 26th days of the month)
    historical term