(idiomatic) Strict secretiveness maintained by the members of a police force with respect to information which might be contrary to their interests, especially information concerning questionable police actions.

(idiomatic) Strict secretiveness maintained by the members of a group with respect to information which might be contrary to their interests, especially information concerning questionable actions by members of the group.

The generation of people born from the late 1920s to the early 1940s.

(chiefly US politics) The largest portion of a demographic group or of the population of a political jurisdiction, which is considered to possess political and social views that are not openly declared, but that can nevertheless significantly affect voting patterns and social behavior.

Synonym of blue wall of silence

plural of silesaurid

(zoology) Any extinct reptile in the family Silesauridae.

Alternative form of silent policeman

(Australia, informal) A small traffic bollard in the middle of an intersection.

plural of Silent Sam