pos·ter·board 
(pōstər-bôrd′)
(pōstər-bôrd′)n.
Cardboard with an appropriate stiffness and thickness for use in making posters.
- superstore
- superstratal
- superstrate
- superstratum
- superstring
- colonoscope
- colonoscopy
- colony
- colony collapse disorder
- colony-stimulating factor
- colophon
- Colophon
- colophony
- color
- colorability
- colorable
- colorably
- Coloradan
- Colorado
- Colorado
- Coloradoan
- Colorado blue spruce
- Colorado Desert
- Colorado potato beetle
- Colorado River