Any form of formal isolation or inhibition of something, especially with the force of law or arms.
The ships or other forces used to effect a naval blockade.
Inhibition of the activity (function) of chemical messengers or their receptors, such as (often) receptor antagonism.
The physical blocking or surrounding of a place, especially a port, in order to prevent commerce and traffic in or out.
Preventing an opponent's pawn moving by placing a piece in front of it.
To create a blockade against.
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.