Wordnet 3.0
NOUN (2)
1.
the quality of being strikingly expressive or vivid;
2.
visually vivid and pleasing;
The Collaborative International Dictionary of English v.0.48:
Picturesque \Pic`tur*esque"\, a. [It. pittoresco: cf. F.
pittoresque. See Pictorial.]
Forming, or fitted to form, a good or pleasing picture;
representing with the clearness or ideal beauty appropriate
to a picture; expressing that peculiar kind of beauty which
is agreeable in a picture, natural or artificial; graphic;
vivid; as, a picturesque scene or attitude; picturesque
language.
[1913 Webster]
What is picturesque as placed in relation to the
beautiful and the sublime? It is . . . the
characteristic pushed into a sensible excess. --De
Quincey.
[1913 Webster] -- Pic`tur*esque"ly, adv. --
Pic`tur*esque"ness, n.
[1913 Webster]
WordNet (r) 3.0 (2006):
picturesqueness
n 1: the quality of being strikingly expressive or vivid
2: visually vivid and pleasing