colloq. [f. TWO + -ER1.] Something consisting of or counted as two; in quot. 1889, a hit at cricket for which two runs are or may be obtained.
1889. Boys Own Paper, 23 March, 400/1. If he hits the ball far enough away for a twoer, he must run it.
1899. N. & Q., 9th Ser. III. 185/2. The value of the buttons varied. There was the average unit, then twoers, as well as others of increased value.