σταφυλή

Matthew 7:16 σταφυλάς, grapes,

By their fruit you will recognize them. Are grapes gathered from thornbushes, or figs from thistles?

Here: Grape clusters, the prized produce of the vine. Vine and fig together were the classic picture of Israel's blessing and of the fruit God looks for.

Luke 6:44 σταφυλὴν grapes

For each tree is known by its own fruit. Indeed, figs are not gathered from thornbushes, nor grapes from brambles.

Here: A cluster of grapes. With the fig it makes up the classic pair of Israel's good fruit.

Revelation 14:18 σταφυλαὶ grapes

Still another angel, with authority over the fire, came from the altar and called out in a loud voice to the angel with the sharp sickle, “Swing your sharp sickle and gather the clusters of grapes from the vine of the earth, because its grapes are ripe.”

Here: The grapes themselves. Together with botryas it fills the scene with ripe fruit, setting up the winepress and the 'blood' of 14:20.