Indicates the calendar year immediately preceding the current year. It refers to the twelve-month period that has just passed. This term is used when talking about past events, accomplishments, or memories from the previous year.

今(いま)の年(とし)の一個(ひとつ)前(まえ)の年(とし)のこと。すでに終(お)わった過去(かこ)の出来事(できごと)や思(おも)い出(で)について話(はな)す時(とき)に使(つか)います。