1. a type of strong coarse cloth   canvas   canvass   2. a person who believes that the existence of God cannot be proved or disproved   agnostic   atheist   3. a brief or indirect reference   allusion   illusion   4. to refer to indirectly   elude   allude   5. representation of the Crucifixion; hill on which Jesus was crucified   cavalry   calvary   6. a false impression or idea   illusion   allusion   7. occurring twice a year   biannual   biennial