Definition of "Canvas" :
noun: a heavy, closely woven fabric (used for clothing or chairs or sails or tents)
noun: the mat that forms the floor of the ring in which boxers or professional wrestlers compete
"The boxer picked himself up off the canvas."
noun: an oil painting on canvas fabric
noun: a tent made of canvas fabric
noun: a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel
noun: the setting for a narrative or fictional or dramatic account
"The crowded canvas of history."
verb: cover with canvas
"She canvassed the walls of her living room so as to conceal the ugly cracks."