The day on which our Savior was crucified was called the "day of preparation," or "the preparation of the Passover," as preceding the Passover Sabbath, which commend at sunset, Matthew 27:62; John 19:31.
These dictionary topics are from American Tract Society Bible Dictionary published in 1859. Public Domain, copy freely.
Rand, W. W. "Entry for 'PREPARATION'". "American Tract Society Bible Dictionary".