To overcome an obstacle.
To compete in the track and field events of hurdles (e.g. high hurdles).
To jump over something while running.
To hedge, cover, make, or enclose with hurdles.
An artificial barrier, variously constructed, over which athletes or horses jump in a race.
An obstacle, real or perceived, physical or abstract.
A movable frame of wattled twigs, osiers, or withes and stakes, or sometimes of iron, used for enclosing land, for folding sheep and cattle, for gates, etc.; also, in fortification, used as revetments, and for other purposes.
To get in the way of; to hinder.