'matchboard' definitions:

Definition of 'matchboard'

From: WordNet
noun
A board that has a groove cut into one edge and a tongue cut into the other so they fit tightly together (as in a floor)

Definition of 'matchboard'

From: GCIDE
  • matchboard \matchboard\ n. A board that has a groove cut into one edge and a tongue cut into the other so they fit tightly together (as in a floor); see match boarding. [WordNet 1.5]