Tar is a very thick liquid that's used to cover road surfaces. You can't walk on fresh, hot tar—you have to wait until it's completely dry.

Besides coating streets and parking lots, tar is also used to waterproof things like roofing shingles and wooden boats. Because it has disinfecting properties, you can sometimes find tar in soap, medicinal shampoos, and even as flavoring in candy and alcohol. When you tar something, you spread tar on it. Long ago, to tar and feather someone was to apply painfully hot, burning tar and feathers to their skin, as a brutal kind of vigilante punishment.

Definitions of tar
  1. noun
    any of various dark heavy viscid substances obtained as a residue
    synonyms: pitch
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    coal tar
    a tar formed from distillation of bituminous coal; coal tar can be further distilled to give various aromatic compounds
    type of:
    any of various naturally occurring impure mixtures of hydrocarbons
  2. verb
    coat with tar
    tar the roof”
    tar the roads”
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    type of:
    coat, surface
    put a coat on; cover the surface of; furnish with a surface
  3. noun
    a man who serves as a sailor
    synonyms: Jack, Jack-tar, gob, mariner, old salt, sea dog, seafarer, seaman
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    show 17 types...
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    able seaman, able-bodied seaman
    a seaman in the merchant marine; trained in special skills
    bo's'n, bo'sun, boatswain, bos'n, bosun
    a petty officer on a merchant ship who controls the work of other seamen
    deckhand, roustabout
    a member of a ship's crew who performs manual labor
    helmsman, steerer, steersman
    the person who steers a ship
    bargee, bargeman, lighterman
    someone who operates a barge
    officer, ship's officer
    a person authorized to serve in a position of authority on a vessel
    a person qualified to guide ships through difficult waters going into or out of a harbor
    sea lawyer
    an argumentative and contentious seaman
    a seaman who works on a ship that hunts whales
    cox, coxswain
    the helmsman of a ship's boat or a racing crew
    captain, master, sea captain, skipper
    an officer who is licensed to command a merchant ship
    first mate, mate
    the officer below the master on a commercial ship
    privateer, privateersman
    an officer or crew member of a privateer
    an officer aboard a ship who keeps accounts and attends to the passengers' welfare
    navigator, sailing master
    the ship's officer in charge of navigation
    the ship's officer who is in charge of provisions and dining arrangements
    an officer on a merchant ship in charge of the cargo and its sale and purchase
    type of:
    crewman, sailor
    any member of a ship's crew
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