Strong's G4315 — προσάββατον (noun)
prosabbaton (pros-ab'-bat-on) n.
1. a fore-sabbath, i.e. the Sabbath-eve
[from G4253 and G4521]
KJV: day before the sabbath 
Root(s): G4253, G4521 
Compare: G3904 
Hebrew root: σάββατον
Occurrences: 1