Definify.com

Webster 1913 Edition

Millboard

Mill′boardˊ

(mĭl′bōrdˊ)

,

Noun.

A kind of stout pasteboard.

Definition 2025

millboard

millboard

English

Noun

millboard ‎(countable and uncountable, plural millboards)

A stiff paperboard or pasteboard used as book covers