a closely woven, heavy cloth of cotton, hemp, or linen, used for tents, sails, etc.

a piece of this or similar material on which a painting is made.

a painting on canvas.

a tent, or tents collectively.

sailcloth.

sails collectively.

any fabric of linen, cotton, or hemp of a coarse loose weave used as a foundation for embroidery stitches, interlining, etc.

the floor of a boxing ring traditionally consisting of a canvas covering stretched over a mat. ?

under canvas

Nautical . with set sails.

in tents; in the field

the troops under canvas.

noun

awning cloth , duck , fly , sailcloth , shade , tarp , tarpaulin , tentingnotes:canvas is the noun (fabric etc.) and canvass is generally a verb (to solicit , question) - though a canvass can be an examination of pros and cons , art , artwork , oil , picture , piece , portrait , still life , watercolornotes:canvas is the noun (fabric etc.) and canvass is generally a verb (to solicit , burlap , coutil , painting , sail , tent