The Collaborative International Dictionary of English v.0.48:

Prose \Prose\, a.
   1. Pertaining to, or composed of, prose; not in verse; as,
      prose composition.
      [1913 Webster]

   2. Possessing or exhibiting unpoetical characteristics;
      plain; dull; prosaic; as, the prose duties of life.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Prose \Prose\, v. t. [imp. & p. p. Prosed; p. pr. & vb. n.
   Prosing.]
   1. To write in prose.
      [1913 Webster]

   2. To write or repeat in a dull, tedious, or prosy way.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Prose \Prose\, v. i.
   1. To write prose.
      [1913 Webster]

            Prosing or versing, but chiefly this latter.
                                                  --Milton.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Prose \Prose\, n. [F. prose, L. prosa, fr. prorsus, prosus,
   straight forward, straight on, for proversus; pro forward +
   versus, p. p. of vertere to turn. See Verse.]
   1. The ordinary language of men in speaking or writing;
      language not cast in poetical measure or rhythm; --
      contradistinguished from verse, or metrical composition.
      [1913 Webster]

            I speak in prose, and let him rymes make. --Chaucer.
      [1913 Webster]

            Things unattempted yet in prose or rhyme. --Milton.
      [1913 Webster]

            I wish our clever young poets would remember my
            homely definitions of prose and poetry, that is;
            prose -- words in their best order; poetry -- the
            best order.                           --Coleridge.
      [1913 Webster]

   2. Hence, language which evinces little imagination or
      animation; dull and commonplace discourse.
      [1913 Webster]

   3. (R. C. Ch.) A hymn with no regular meter, sometimes
      introduced into the Mass. See Sequence.
      [1913 Webster]

WordNet (r) 3.0 (2006):

prose
    n 1: ordinary writing as distinguished from verse
    2: matter of fact, commonplace, or dull expression

The Free On-line Dictionary of Computing (19 January 2023):

PROSE

   1. PROblem Solution Engineering.  Numerical problems including
   differentiation and integration.  "Computing in Calculus",
   J. Thames, Research/Development 26(5) (May 1975).

   2. A constraints-and-sequencing system similar to
   Kaleidoscope.  "Reflexive Constraints for Dynamic Knowledge
   Bases", P. Berlandier et al in Proc First Intl CS Conf '88:
   AI: Theory and Appls, Dec 1988.