can·vas 
/ˈkænvəs/ noun
plural can·vas·es /ˈkænvəs/ noun 1 : a strong, rough cloth that is used to make bags, tents, sails, etc. [noncount] ▪ a tent made of canvas ▪ a canvas chair/bag ▪ canvas shoes [count] ▪ Use a canvas to cover the boat. 2 [count] a : a specially prepared piece of cloth on which a picture can be painted by an artist
▪ a fresh/blank canvas
b : a painting made on a piece of cloth
▪ The museum has several canvases by Rubens.
▪ a fresh/blank canvas
b : a painting made on a piece of cloth
▪ The museum has several canvases by Rubens.
under canvas
chiefly Brit : in a tent
▪ a night under canvas [=a night sleeping in a tent]
▪ a night under canvas [=a night sleeping in a tent]
