obstruct
v 1: hinder or prevent the progress or accomplishment of; "His
brother blocked him at every turn" [syn: {blockade}, {block},
{hinder}, {stymie}, {stymy}, {embarrass}]
2: block passage through; "obstruct the path" [syn: {impede}, {occlude},
{jam}, {block}, {close up}] [ant: {free}]