さえぎ遮saegiるru
1.
To cause a disruption in the flow of an activity or conversation by intervening unexpectedly, preventing it from continuing smoothly.
2.
To physically obstruct someone’s path or movement, hindering their ability to proceed or to carry out their intentions.
3.
To hinder visibility or light by creating a barrier that prevents them from reaching an intended target or area.
Example:
この大木で光がすっかりさえぎられている。