to block or close up with an obstacle; make difficult to pass

Debris obstructed the road.

to interrupt, hinder, or oppose the passage, progress, course, etc., of.

to block from sight; to be in the way of (a view, passage, etc.).

verb

abet , aid , assist , boost , clear , help , promote , support

verb

arrest , bar , barricade , block , check , choke , clog , close , congest , crab , curb , cut off , drag one’s feet , fill , foul up , frustrate , get in the way , hamper , hamstring * , hang up * , hide , hinder , hold up , impede , inhibit , interfere , interrupt , mask , monkey with , obscure , occlude , plug , restrain , retard , sandbag , shield , shut off , slow down , stall , stonewall * , stop , stopper , stymie * , terminate , throttle , thwart , trammel , weigh down , bog , encumber , hold back , dam , conceal , screen , shroud , barrier , beset , blockade , block up , crimp , delay , filibuster , foil , incommode , oppilate , oppose , parry , prevent , stonewall , stymie