The Greek noun ampelourgos means "vinedresser" or "gardener who tends a vineyard," combining ampelos (vine) + ergon (work). It appears in Luke 13:8 in the parable of the barren fig tree, where the vinedresser pleads for one more year of care.
The ampelourgos in Jesus' parable is an image of divine intercession and mercy. The owner (God's justice) would cut down the unfruitful tree; the vinedresser (the Son, interceding for sinners) pleads for more time, more grace. This parable extends the mercy of the Incarnation: God did not cut down Israel immediately but sent His Son to dig around and fertilize.