Singular
canvas

Plural
canvasses or canvases

  1. (UK) The plural form of canvas; more than one (kind of) canvas.
    Many canvasses lined the wall.

Plain form
canvass

Third-person singular
canvasses

Past tense
canvassed

Past participle
canvassed

Present participle
canvassing

  1. The third-person singular form of canvass.