It's likely a figurative phrase created for a specific context, meaning:
* A victory celebrated with wine: This is the most straightforward interpretation. It suggests a joyful celebration of success, often involving the consumption of wine.
* A victory achieved with finesse and sophistication: Wine is often associated with refinement and good taste. In this sense, "wine-toasted" could imply a victory achieved through skillful maneuvering or clever tactics.
* A victory with a bittersweet aftertaste: Wine, while enjoyable, can have a lingering effect. "Wine-toasted" might hint at a victory that, while achieved, leaves a slight sense of melancholy or regret.
Without further context, the exact meaning of "wine-toasted victory" is ambiguous.
To understand its intended meaning, you would need more information about where you encountered the phrase.