English▸ noun the action of obstructing or the state of being obstructed:
walkers could proceed with the minimum of obstruction
they faced obstruction in carrying out their research.
▪ a thing that impedes or prevents passage or progress; an obstacle or blockage:
the tractor hit an obstruction.
▪ (in various sports) the action of unlawfully obstructing a player in the opposing team.
▪ Medicine blockage of a bodily passageway, as the intestines:
they presented with severe intestinal obstruction.
▪ Law the action of deliberately hindering a legal process:
he was charged with obstruction of a police officer in the execution of his duty.