See also: Caster


casters on a swivel chair (2)
silver caster (3), early 18th c.

Alternative formsEdit


cast +‎ -er; the wheel sense comes from obsolete cast (to turn).



caster (plural casters)

  1. Someone or something that casts
    a caster of spells
    a caster of stones
    a caster of bronze statuary
    an online caster of video games
  2. A wheeled assembly attached to a larger object at its base to facilitate rolling. A caster usually consists of a wheel (which may be plastic, a hard elastomer, or metal), an axle, a mounting provision (usually a stem, flange, or plate), and sometimes a swivel (which allows the caster to rotate for steering).
    Many office chairs roll on a set of casters.
  3. A shaker with a perforated top for sprinkling condiments such as sugar, salt, pepper, etc.
    Synonym: cruet
    a set of casters
    • 1860–1861, Charles Dickens, chapter VI, in The Uncommercial Traveller[1]:
      Your waiter having settled that point, returns to array your tablecloth, with a table napkin folded cocked-hat-wise (slowly, for something out of window engages his eye), a white wine-glass, a green wine-glass, a blue finger-glass, a tumbler, and a powerful field battery of fourteen casters with nothing in them; []
    • 1910, O. Henry, “The Girl and the Habit”, in Strictly Business[2]:
      She could keep cool and collected while she collected your check, give you the correct change, win your heart, indicate the toothpick stand, and rate you to a quarter of a cent better than Bradstreet could to a thousand in less time than it takes to pepper an egg with one of Hinkle’s casters.
  4. A stand to hold a set of shakers or cruets.
  5. (automotive) The angle of the axis around which a car's front wheels rotate when the steering wheel is turned, with a vertical axis being defined as zero caster.
    • 2008, Ronald G Haefner, The Car Care Book[3], →ISBN, page 238:
      In addition, caster helps to reduce steering effort and to return the steering wheel to the center position after a turn.

Derived termsEdit


See alsoEdit


caster (third-person singular simple present casters, present participle castering, simple past and past participle castered)

  1. To act as a caster