flavor: n. 1. Variety, type, kind. "DDT commands come in two flavors." "These lights come in two flavors,

:flavor: n. 1. Variety, type, kind. "DDT commands come in two
flavors." "These lights come in two flavors, big red ones and
small green ones." See {vanilla}. 2. The attribute that causes
something to be {flavorful}. Usually used in the phrase "yields
additional flavor". "This convention yields additional flavor by
allowing one to print text either right-side-up or upside-down."
See {vanilla}. This usage was certainly reinforced by the
terminology of quantum chromodynamics, in which quarks (the
constituents of, e.g., protons) come in six flavors (up, down,
strange, charm, top, bottom) and three colors (red, blue, green)
- however, hackish use of `flavor' at MIT predated QCD. 3. The
term for `class' (in the object-oriented sense) in the LISP Machine
Flavors system. Though the Flavors design has been superseded
(notably by the Common LISP CLOS facility), the term `flavor' is
still used as a general synonym for `class' by some LISP hackers.
-- The AI Hackers Dictionary