n. A block or mass of anything constituting an encumbrance.n. Specifically— A block of wood or other material fastened to an animal, as by a rope or chain to its leg, to impede its movements.n. A block of wood fastened to or placed under the wheel of a vehicle to serve as a brake in descending a hill.n. Hence Any encumbrance; anything that hinders motion or action, physical or moral, or renders it difficult; a hindrance or impediment.n. Same as clog-almanac.n. A cone of the pine or other coniferous tree.n. A kind of shoe with a very thick sole and high heels, worn either alone or as an overshoe.n. Hence A similar shoe used in the modern clog-dance.n. A clog-dance.n. In coal-mining, a short piece of timber placed between a prop and the roof which it helps to support.To impede the movements of; encumber; hamper; hobble, as by a chain, a rope, a block of wood, or the like: as, to clog a bullock to prevent it from leaping fences; to clog a wheel.To restrain; confine.To choke up; obstruct so as to hinder passage through: as, to clog a tube; to clog a vein.Figuratively, to throw obstacles in the way of; encumber; hinder; burden; trammel; hamper: as, to clog commerce with restrictions.Synonyms To shackle, fetter, restrain, cumber, embarrass, restrict.To become loaded, encumbered, or choked up with extraneous matter.To coalesce; unite and adhere in a cluster or mass; stick together.