adv. rare. [f. SUN sb. + -WAY.] = next.

1

1825.  J. Nicholson, Operat. Mechanic, 143. The running mill-stone is supposed to turn ‘sunway,’ or as in what is called a right-handed mill.

2

1852.  Burn, Naval & Milit. Dict., Sunway, de gauche à droite.

3