Eights meaning : An island in a river, especially the River Thames in England. The digit/figure 8. Any of the four cards in a normal deck with the value eight. A light, narrow rowing boat, especially one used in competitive rowing, steered by a cox, in which eight rowers each have two oars. (especially in plural) A race in which such craft participate. The eight people who crew a rowing-boat. A pair of eights.