Divided into squares, or into light and dark patches. / (figuratively) Changeable; inconsistent; having variations or uncertainty; marked by many problems or failures.

simple past tense and past participle of checker

A pattern of squares of alternating colours. / A board, usually square, covered with such a pattern; especially such a board with 8×8 squares, used to play chess and draughts/checkers.

(transitive) To checker; to mark with an alternating pattern of light and dark.

plural of checkerboard

(computing) A software application that attempts to verify spelling in a document.

plural of checkerberry

The teaberry, Gaultheria procumbens.

plural of checkerspot

Any of a group of butterflies of the subfamily Nymphalinae whose wings bear a checkered, spotted pattern.