Vocabulary What does 4月 (しがつ, shigatsu) mean? 4月 (しがつ, shigatsu) means April. Quick factsReadingしがつRomajishigatsuPart of speechnoun 4月しがつshigatsuApril1noun April2noun fourth month in the lunar calendarAlso written: 四月Kanji in this word月month; moon