An obstacle, barrier, or bulwark.
A barrier constructed across a road, especially as a military defence
A place of confrontation.
to close or block a road etc., using a barricade
to keep someone in (or out), using a blockade, especially ships in a port
An obstacle, real or perceived, physical or abstract.
An artificial barrier, variously constructed, over which athletes or horses jump in a race.
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 compete in the track and field events of hurdles (e.g. high hurdles).
To overcome an obstacle.
To jump over something while running.
To hedge, cover, make, or enclose with hurdles.