Definitions
1.nounOne who checks or verifies something.
2.nounOne who makes a check mark.
3.nounThe clerk who tallies cost of purchases and accepts payment."There was a long line at the grocery store because the checker was so slow."
4.nounOne who hinders or stops something.
5.nounA playing piece in the game of checkers (British: draughts).
6.nounA pattern of alternating colours as on a chessboard.
7.nounThe fruit of the wild service tree or chequer tree, Photinia villosa, syn. Sorbus terminalis