One who checks or verifies something.
One who makes a check mark.
The clerk who tallies cost of purchases and accepts payment.
There was a long line at the grocery store because the checker was so slow.
One who hinders or stops something.
A playing piece in the game of checkers (British: draughts).
A pattern of alternating colours as on a chessboard.
To mark in a pattern of alternating light and dark positions, like a checkerboard.
To develop markings in a pattern of alternating light and dark positions, like a checkerboard.
The fruit of the wild service tree or chequer tree, Photinia villosa, syn. Sorbus terminalis