WordNet (r) 3.0 (2006):

daisywheel printer
    n 1: a printer that uses a daisy print wheel

The Free On-line Dictionary of Computing (30 December 2018):

daisywheel printer

    A kind of impact printer where the characters are
   arranged on the ends of the spokes of a wheel (resembling the
   petals on a daisy).

   The wheel (usually made of plastic) is rotated to select the
   character to print and then an electrically operated hammer
   mechanism bends the selected spoke forward slightly,
   sandwiching an ink ribbon between the character and the paper,
   as in a typewriter.

   One advantage of this arrangement over that of a typewriter is
   that different wheels may be inserted to produce different
   typefaces.

   (1998-04-28)