of crib-the act of inclosing or confining in a crib or in close quarters.-purloining; stealing; plagiarizing.-a framework of timbers and plank backing for a shaft lining, to prevent caving, percolation of water, etc.-a vicious habit of a horse; crib-biting. the horse lays hold of the crib or manger with his teeth and draws air into the stomach with a grunting sound.