Strong's #4315: prosabbaton (pronounced pros-ab'-bat-on)
from 4253 and 4521; a fore-sabbath, i.e. the Sabbath-eve:--day before the sabbath. Compare 3904.
Thayer's Greek Lexicon:
́
prosabbaton
1) the day before the sabbath
Part of Speech: noun neuter
Relation: from G4253 and G4521
Usage:
This word is used 1 times:
Mark 15:42: "it was the preparation, that is, the day before the sabbath,"