The Collaborative International Dictionary of English v.0.48:

Easel \Ea"sel\, n. [D. ezel ass, donkey, hence, easel, or G.
   esel; akin to E. ass. See Ass.]
   A frame (commonly) of wood serving to hold a canvas upright,
   or nearly upright, for the painter's convenience or for
   exhibition.
   [1913 Webster]

   Easel picture, Easel piece, a painting of moderate size
      such as is made while resting on an easel, as
      distinguished from a painting on a wall or ceiling.
      [1913 Webster]

WordNet (r) 3.0 (2006):

easel
    n 1: an upright tripod for displaying something (usually an
         artist's canvas)

Moby Thesaurus II by Grady Ward, 1.0:

32 Moby Thesaurus words for "easel":
   air brush, art paper, brush, camera lucida, camera obscura, canvas,
   chalk, charcoal, crayon, drawing paper, drawing pencil, drier,
   fixative, ground, lay figure, maulstick, medium, paint, paintbrush,
   palette, palette knife, pastel, pencil, pigments, scratchboard,
   siccative, sketchbook, sketchpad, spatula, spray gun, stump,
   varnish



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

EASEL
       	Emergent Algorithm Simulator and Evaluation Language


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

EASEL
       Educator Access to Services in the Electronic Landscape (CORDIS)