Definition of "checked"

At that moment a long, scraggy individual in a checked suit poked his head into the bar, looked around portentously, whistled mysteriously to my informant, and jerked his thumb and head in the direction of the door.

1946, George Johnston, Skyscrapers in the Mist, page 121

Later that day, all X's friends put on their red and white checked overalls and went over to see X.

1978, Lois Gould, X: A Fabulous Child's Story, New York: Daughters Publishing Co.