BLOCK

(PREVENT) [verb] [T] - to prevent movement through (something) or to prevent (something) from happening or succeedingA fallen tree is blocking the road.All the roads out of the town were blocked off (= cars were prevented from using them) by the police. [M]My view was blocked by a tall man in a hat standing in front of me. [T]Another car had parked behind me and blocked me in. [M]Unfortunately, a tree near the window blocks (out) the sun (= stops the light from coming in). [T or M](figurative) He's trying to block out (= stop himself thinking about) the accident. [M]Every autumn dead leaves block (up) the drains. [T or M]Her parents were blocking her progress (= stopping her from succeeding). [T]A group of politicians blocked the proposal (= stopped it from being completed.) [T]