<p><strong>Noun</strong></p><ul><li>a post, stake, pale, or peg that is used in a fence or barrier, to fasten down a tent, etc.</li><li>a person stationed by a union or the like outside a factory, store, mine, etc., in order to dissuade or prevent workers or customers from entering it during a strike.</li><li>a person engaged in any similar demonstration, as against a government's policies or actions, before an embassy, office building, construction project, etc.</li><li>Military. a soldier or detachment of soldiers placed on a line forward of a position to warn against an enemy advance.</li><li>Navy, Air Force. an aircraft or ship performing similar sentinel duty.</li></ul><p><strong>Verb</strong></p><ul><li>(used with object) to enclose within a picket fence or stockade, as for protection, imprisonment, etc.: to picket a lawn; to picket captives.</li><li>to fasten or tether to a picket.</li><li>to place pickets in front of or around (a factory, store, mine, embassy, etc.), as during a strike or demonstration.</li><li>Military. to guard, as with pickets.</li><li>to post as a picket.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to stand or march as a picket.</li></ul>