four-eyed; pattern of four squares
Refers to something with four eye-like markings or a design of four squares, such as a mask, a pattern on fabric, or a traditional lattice. The 'four-eyed' gloss is literal; it does not mean 'wearing glasses'.
This cloth has a pattern of four squares.
A dancer wearing a four-eyed mask appeared on stage.
Compound of 四つ (yotsu, 'four') and 目 (me, 'eye'). The meaning 'pattern of four squares' comes from the resemblance of a square to an eye in traditional designs.