Containing three, as in a set or group.

It's Wednesday. Third day of the work week. Three more days until I see Kelly. I go to work at three today. So let's just keep this tri-thing going.

Three of my favorite new releases:

Josh Ritter - So Runs the World Away
Southern Pacifica

Drive-By Truckers - The Big To-Do
 The Fourth Night of My Drinking

Deftones - Diamond Eyes
Rocket Skates

Three guys with sweet hair and sweet tunes (that happen to be dead):

Gary Stewart - Oh, Sweet Temptation

Three killer piano-based rock records:

Ben Folds Five - S/T

The Dresden Dolls - S/T

Fiona Apple - Extraordinary Machine

And let us not forget the great one that has passed...

Rest well metal warrior.