Wiktionary
long on
n. (context cricket English) a fielding position on the leg side, about 70° forward of square, designed to prevent runs from drives or to catch lofted drives
Usage examples of "long on".
IT was only about half past one when they arrived back, because they had had lunch so very early, and had not stayed long on the island.
And at that, using so much capacity for so long on a single task brought the chance of a sixfold simultaneous error to the thirty per cent level, so there was one chance in three that when they built the final version and switched it on something would have gone irremediably wrong.
But he was too old and had lived too long on the edge of violence to be scared of death.