scaleboard

American  

[skeyl-bawrd, -bohrd, skab-erd] / ˈskeɪlˌbɔrd, -ˌboʊrd, ˈskæb ərd /

noun

1. a very thin board, as for the back of a picture.

2. Printing. a thin strip of wood used in justifying.

3. a thin sheet of wood used as veneer.

---

scaleboard British  

/ ˈskæbəd, ˈskeɪlˌbɔːd /

noun

1. a very thin piece of board, used for backing a picture, as a veneer, etc

---

Etymology

Origin of scaleboard

First recorded in 1705–15; scale ¹ + board