87%RatingSave Gender Feminine Usage English (Rare) Pronounced Pron. /ɑk.ˈtoʊ.bəɹ/ [key·simplify] Meaning & History From the name of the tenth month. It is derived from Latin octo meaning "eight", because it was originally the eighth month of the Roman year. Categories autumn, ends in -er, English nouns, months, numeric meanings, rare English, time periods, voice actors, word names