It means your battery is dying
your battery is either lose or dead check that
Battery dead
It could be a dead battery.
Could be the Starter or the Transmission
i might be wrong but it could be the 'bendex'. this is the part of the starter motor that disengages it after the engine turns on. it might not be fully disengaged from the previous trip. sometimes all that is needed to get it to go is to rock the car foreward or back a little. hope that helps.
solenoid or relay switch
if the battery and battery conections are good, then you need to replace the starter motor
One of a few things depending on the click. If it makes consecutive clicks when you turn the key (click,click,click,click) then the odds are the battery is dead or in need of charging and there just isn't enough charge to fully engage the starter and turn over the engine. If it clicks just once, the selenoid is usually bad, or the starter is "locked" and will need to be replaced.
Dead battery? try jumping it off. bad starter solenoid? bad starter?
just click!
I just replaced our engine in our new to us '02 Sedona 3.5l. It cost us $2300 and I think that we got out cheaper than most. That's still too much for the POS! Had 144K and replaced it with one that reportedly has 65k.
The starter solenoid/relay switch is going bad. Eventually, it will just click and not start.