SYZYGY - is a valid Scrabble word.
Definition of SYZYGY:
- alignment of three celestial objects, as the sun, the earth, and either the moon or a planet
- an alignment of three celestial objects, as the sun, the earth, and the moon.
- any two related things, either alike or opposite
- group or combination of two feet, sometimes restricted to a combination of two feet of different kinds
- the configuration of the earth, moon and sun lying in a straight line [n SYZYGIES]