Webster's Revised Unabridged Dictionary · 1913

Obstruct

Obstruct , transitive verb

[Latin obstructus, past participle of obstruere to build up before or against, to obstruct; ob (see Ob-) + struere to pile up. See Structure.]

1.
To block up; to stop up or close, as a way or passage; to place an obstacle in, or fill with obstacles or impediments that prevent or hinder passing; as, to obstruct a street; to obstruct the channels of the body.
'T is the obstructed paths of sound shall clear. — Pope
2.
To be, or come, in the way of; to hinder from passing; to stop; to impede; to retard; as, the bar in the harbor obstructs the passage of ships; clouds obstruct the light of the sun; unwise rules obstruct legislation.
Th' impatience of obstructed love. — Johnson