IPA: /ˈkjuːbɪkəl/
KK: /ˈkjubɪkəl/
Having the shape or form of a cube; relating to three-dimensional space and volume.
The artist created a cubical sculpture that stood in the center of the gallery.
Cubical → It is formed from "cubus" (from Latin, meaning cube) and the suffix "-ical" (meaning pertaining to). The word "cubical" refers to something that is related to or shaped like a cube.
Think of the word 'cube' which describes a three-dimensional shape with equal sides, and remember that 'cubical' means something that pertains to or resembles a cube.