What does Jill mean in Greek?

There isn't a direct equivalent of the name "Jill" in Greek. The name Jill is of English origin, a diminutive of Gillian or Juliet. To find a Greek name with a similar meaning or sound, you'd need to consider what aspect of Jill you want to reflect. For example:

* If you mean a similar *sound*: Names like Ιλιάδα (Iliada), meaning "of Troy", or Καλλιόπη (Kalliope), meaning "beautiful-voiced," might be considered, but they have different meanings.

* If you want a similar *meaning* (assuming a meaning associated with Gillian/Juliet like youthful or beautiful): You'd have to choose a Greek name that embodies those qualities. Many Greek names have meanings related to beauty, grace, or youth; examples might include Καλλίστη (Kallisti - "fairest") or Δωρίς (Doris - "gift").

Ultimately, there's no perfect Greek translation for "Jill." The best choice depends on what qualities you wish to emphasize.