agora air brush amphitheater aquarelle arena art paper athletic field auditorium background bear garden big top boltrope bowl boxing ring brush bull ring camera lucida camera obscura campus chalk charcoal circus clew cloth cockpit coliseum colosseum course crayon cringle crowd of sail drawing paper drawing pencil drier earing easel easel-picture field finger painting fixative floor foot fore-and-aft sail forum gouache ground gym gymnasium hall head hippodrome lay figure leech lists locale luff marketplace mat maulstick medium milieu muslin oil oil painting open forum paint paintbrush painting palaestra palette palette knife parade ground pastel pencil pigments pit place plain sail platform precinct press of sail prize ring public square purlieu rag range reduced sail reef point reefed sail ring round top sail scene scene of action scenery scratchboard setting siccative site sketchbook sketchpad spatula sphere spray gun square sail squared circle stadium stage stage set stage setting stump tempera tent tentage terrain theater tilting ground tiltyard top varnish walk wash wash drawing water whitetop wrestling ring