adjective

1. having the shape of a cube
2. having three dimensions, or having the volume of a cube whose length, width, and depth (or height) each measure the given unit a cubic foot
3. designating or of a crystal system having three axes of equal length, each of which intersects at right angles with the others
4. Math. of the third power or degree; relating to the cubes of numbers or quantities

Etymology: ME cubik < OFr cubique < L cubicus < Gr kybikos: see cube