scratchboard

/skrach-bawrd, -bohrd/US // ˈskrætʃˌbɔrd, -ˌboʊrd //

划线板,刮痧板,刮板,划痕板

Definitions

n.名词 noun

1
- : a cardboard coated with impermeable white clay and covered by a layer of ink that is scratched or scraped in patterns revealing the white surface below.