Tiger Woods and Elin -- The Secret Meeting

Tiger Woods and his wife Elin Nordegren had a meeting yesterday with a mysterious suited man, this according to a neighbor who talked to TMZ.

We're told Tiger, his wife and the suited man all showed up to Tiger's house in Isleworth around 4:00 PM yesterday. They all arrived in separate cars -- Elin in a red Buick, Tiger in a Black Escalade (not that one), and then the suited man in a third vehicle.

The suited man left after the 2.5 hour tête-à-tête, but Tiger and Elin's cars are still there at last check.

We called Tiger's lawyer to figure out who the mystery man was -- no comment.