What does the FJ in the Toyota FJ Cruiser actually mean?

The only thing I can think of is "Fake Jeep" but that might not be right...

FJ was the code for the old Toyota Land Cruiser in the 1960s which the FJ Cruiser looks like. I don't know if it was licensed or copied from Jeep but it was very similar in design, but bigger and with a Chevy-like six cylinder engine instead of a little four cylinder.

Saw this answered in a different forum: They said that F is for the Fuel type and the J is for Jeep.