Something that impedes or prevents entry or passage
To plug up something, as a hole, space, or container
Dean planned to spend his free time biking, but changed his mind when he saw the crowds in town and remembered the traffic that would clog the narrow roads.
So they threw their sabots, a kind of clog shoe, into the machinery to break it—an act that gave us the word sabotage.
If the first method be adopted, the trouble which presents itself is that the tar contains a high percentage of pitch, which tends rapidly to choke and clog up all the pipes.
But though Dual Control was at an end, the Caisse de la Dette remained, and this body was to prove a constant clog on the financial measures of the Egyptian government.
Without preheating the expanding air becomes so cold as to be liable to deposit snow from the moisture held in suspension, and thereby to clog the valves.