(1)最近の過去
(2)今日の直前の日
(3)the day immediately before today
(4)the recent past; "yesterday's solutions are not good enough"; "we shared many yesterdays"
さらに詳しく
(1)昨日の前の日。いっさくじつ(一昨日)。 ｢おとつい(一昨日)｣とも呼ぶ。
