to chase, to run after, to pursue, to follow after, to follow (a set order, a trend, etc.), to drive out, to get rid of, to oust, to expel, to drive (e.g. a herd), to be pressed (e.g. for time)
追いつく【おいつく】
to catch up (with), to draw level, to pull even, to reach, to be compensated, to make up for one's losses