A person or agent (human or software) that examines, verifies, or totals items, payments, or data. Before submitting the document, she ran it through a spell checker.
A small, round, flat piece used in the game of checkers. He moved his checker diagonally across the board.
A pattern of squares, typically alternating in color. The tablecloth had a red and white checker pattern.
A program or tool that automatically inspects digital text or data for errors or inconsistencies. Run the grammar checker before sending your email.