Real Dictionary

Passover
Passover is a Jewish festival that begins in March or April and lasts for seven or eight days. Passover begins with a special meal that reminds Jewish people of how God helped their ancestors escape from Egypt.

Passover in American English
a Jewish holiday (Pesach) celebrated for eight (or seven) days beginning on the 15th of Nisan and commemorating the deliverance of the ancient Hebrews from slavery in Egypt: Ex. 12
noun: a Jewish festival that commemorates the exodus of the Jews from Egypt and is marked chiefly by the Seder ritual and the eating of matzoth. It begins on the 14th day of Nisan and is celebrated for eight days by Orthodox and Conservative Jews outside of Isr

Passover in British English
noun: an eight-day Jewish festival beginning on Nisan 15 and celebrated in commemoration of the passing over or sparing of the Israelites in Egypt, when God smote the firstborn of the Egyptians (Exodus 12)