1Music (on a piano or other keyboard instrument) a board (which frequently bears the maker's name) fitted perpendicular to, and across the back of, the keyboard.
2Generally a board or sign bearing a name.
Origin
Mid 19th century; earliest use found in The Civil Engineer and Architect's Journal.
Definition of name board in US English:
name board
noun
1Music (on a piano or other keyboard instrument) a board (which frequently bears the maker's name) fitted perpendicular to, and across the back of, the keyboard.
2Generally a board or sign bearing a name.
Origin
Mid 19th century; earliest use found in The Civil Engineer and Architect's Journal.